Update e2e CI and docs

[HarHarLinks]

✔️ Checklist

• A changeset describing the change and affected packages (more info).
• Added or updated documentation.
• Tests for new functionality and regression tests for bug fixes.
• Screenshots or videos attached (for UI changes).
• All your commits have a Signed-off-by line in the message (more info).

[HarHarLinks]

1. The previously used Element Web 1.11.50 still works, but does not support the widget toggles (2f3320b).
2. With Element Web 1.11.58, widget toggles are supported (9c0b116).
3. The testing container does not build when using the latest Element (>= 1.11.84) (768e8c2): due to the absorption of the matrix-react-sdk into Element Web, some references in the modules have become invalid.

29.80 [webpack-cli] ModuleNotFoundError: Module not found: Error: Can't resolve 'matrix-react-sdk/src/MatrixClientPeg' in '/src/node_modules/@nordeck/element-web-guest-module/customisations'
29.80     at /src/node_modules/webpack/lib/Compilation.js:2109:28
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:908:13
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:10:1)
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:333:22
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:9:1)
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:512:22
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:150:10
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:775:25
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:992:8
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:1121:5
29.80     at /src/node_modules/neo-async/async.js:6883:13
29.80     at /src/node_modules/webpack/lib/NormalModuleFactory.js:1104:45
29.80     at finishWithoutResolve (/src/node_modules/enhanced-resolve/lib/Resolver.js:567:11)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:656:15
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:15:1)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:27:1)
29.80     at /src/node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js:89:43
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:16:1)
29.80     at /src/node_modules/enhanced-resolve/lib/forEachBail.js:39:13
29.80     at /src/node_modules/enhanced-resolve/lib/AliasPlugin.js:148:14
29.80     at next (/src/node_modules/enhanced-resolve/lib/forEachBail.js:35:3)
29.80     at forEachBail (/src/node_modules/enhanced-resolve/lib/forEachBail.js:49:9)
29.80     at /src/node_modules/enhanced-resolve/lib/AliasPlugin.js:61:5
29.80     at _next0 (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:8:1)
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:30:1)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:16:1)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:16:1)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:27:1)
29.80     at /src/node_modules/enhanced-resolve/lib/DescriptionFilePlugin.js:89:43
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:16:1)
29.80     at /src/node_modules/enhanced-resolve/lib/Resolver.js:718:5
29.80     at eval (eval at create (/src/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:15:1)
29.80     at /src/node_modules/enhanced-resolve/lib/DirectoryExistsPlugin.js:41:15
29.80     at process.processTicksAndRejections (node:internal/process/task_queues:81:21)
29.80 resolve 'matrix-react-sdk/src/MatrixClientPeg' in '/src/node_modules/@nordeck/element-web-guest-module/customisations'
29.80   Parsed request is a module
29.80   using description file: /src/node_modules/@nordeck/element-web-guest-module/package.json (relative path: ./customisations)
29.80     Field 'matrix_src_browser' doesn't contain a valid alias configuration
29.80     Field 'browser' doesn't contain a valid alias configuration
29.80     resolve as module
29.80       /src/node_modules/@nordeck/element-web-guest-module/customisations/node_modules doesn't exist or is not a directory
29.80       looking for modules in /src/node_modules/@nordeck/element-web-guest-module/node_modules
29.80         /src/node_modules/@nordeck/element-web-guest-module/node_modules/matrix-react-sdk doesn't exist
29.80       /src/node_modules/@nordeck/node_modules doesn't exist or is not a directory
29.80       /src/node_modules/node_modules doesn't exist or is not a directory
29.80       looking for modules in /src/node_modules
29.80         /src/node_modules/matrix-react-sdk doesn't exist
29.80       /node_modules doesn't exist or is not a directory

4. The container does build using Element Web <1.11.84, yet the tests fail - I'm guessing due to changes in Element UI (036b3f5).

[weeman1337]

Awesome