fix: Bridge and Send pages crash when there's no solana account

[micaelae]

Description

See ticket for details

Related issues

Fixes: #30792

Manual testing steps

1. Go to this page...

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[metamaskbot]

Builds ready [b8c3c58]

• builds: chrome, firefox
• builds (flask): chrome, firefox
• builds (MMI): chrome
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• mv3: Bundle Size Stats
• mv2: E2e Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
  • content-script: 0
  • offscreen: 0

Page Load Metrics (1691 ± 73 ms)

Platform	Page	Metric	Min (ms)	Max (ms)	Average (ms)	StandardDeviation (ms)	MarginOfError (ms)
Chrome	Home	firstPaint	488	2048	1624	298	143
		domContentLoaded	1496	2032	1669	149	71
		load	1506	2046	1691	153	73
		domInteractive	26	57	34	7	4
		backgroundConnect	9	84	29	20	10
		firstReactRender	14	73	31	22	10
		getState	4	61	15	17	8
		initialActions	0	1	0	0	0
		loadScripts	1104	1587	1254	129	62
		setupStore	7	57	17	17	8
		uiStartup	1729	2372	1936	177	85

Bundle size diffs

• background: 0 Bytes (0.00%)
• ui: 30 Bytes (0.00%)
• common: 0 Bytes (0.00%)