fix: avoid unnecessary favicon.ico requests when unset

[SH4LIN]

What

• This PR will fix the new GraphQL request sent for favicon.ico

Why

• When icon tag is not available in head tag browser tries to fetch it from /favicon.ico path. This request is getting to the NextJS Server and it is considering this request to a page request and making a GQL request to fetch favicon.ico request.

How

• Passing # as icon when Icon is not available

Checklist

• I have read the Contribution Guidelines.
• My code is tested to the best of my abilities.
• My code passes all lints (ESLint, tsc, prettier etc.).
• My code has detailed inline documentation.
• I have added unit tests to verify the code works as intended.
• I have updated the project documentation as needed.
• I have added a changeset for this PR using npm run changeset.

[changeset-bot]

🦋 Changeset detected

Latest commit: dd51146

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@snapwp/next	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[coveralls]

Pull Request Test Coverage Report for Build 14432541899

Details

• 0 of 4 (0.0%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.1%) to 53.621%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/next/src/middleware/proxies.ts	0	2	0.0%
packages/next/src/root-layout/icons-metadata.ts	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
packages/next/src/middleware/proxies.ts	1	3.45%

Totals
Change from base Build 14394242697:	-0.1%
Covered Lines:	399
Relevant Lines:	660

---

💛 - Coveralls

[justlevine]

(not a real approval, confirming repo permissions, will reset and review shortly)

[Copilot]

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

Comments suppressed due to low confidence (2)

packages/next/src/root-layout/icons-metadata.ts:49

• Consider adding unit tests for the getIcons function to verify that it correctly returns the fallback icons when settings are undefined.

if ( ! settings ) { return fallbackIcons; }

packages/next/src/middleware/proxies.ts:25

• Consider adding unit tests to ensure that requests to '/favicon.ico' are correctly intercepted and return a 404 response.

if ( '/favicon.ico' === nextPath ) {

[justlevine]

Nothing else to add. I defer to @ayushnirwal for review/approval.