fix(compiler): extract "use server" function declarations nested in a function

[ryansolid]

A "use server" directive on a function declaration nested inside another function did nothing. The bubbling pre-pass turns declarations into const name = function name() {} so the transform only handles expression forms, but (matching Babel's tmp.skip()) it never descended into a bubbled body, so a nested declaration never became an expression and was never extracted. The body shipped to the client and ran there.

Meanwhile the capture validator walks every function, so the same declaration did get its captures checked:

export function outer(db) {
  async function inner() { "use server"; return db.x; }  // compile error: captures `db`
  async function other() { "use server"; return 1; }     // compiled, silently NOT extracted
}

The bubbler now descends into each bubbled body, so nested declarations are extracted like any other marked function, at any depth and inside nested blocks. The const lands at the top of its block, so a use above the declaration still resolves. Ids follow the binding path (outer.inner, outer.mid.inner).

• Only files that extract at least one function keep the pass's output (valid), so the extra bubbling never reaches a file without server functions.
• No existing fixture contains a nested declaration, so the frozen Babel references are unchanged. Babel never produced output for this case, so rather than author a fictional reference the behaviour is pinned in directives-nested-declarations.test.js (server and client shape, hoisting, depth, block nesting, capture rejection, unmarked declarations untouched).
• One existing id-scheme test now compares order-insensitively: nested declarations hoist in reverse source order like top-level ones, which moves the reporting order without moving an id.

Surfaced while reviewing #3363/#3365.

[changeset-bot]

🦋 Changeset detected

Latest commit: 882ad7f

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

This PR includes changesets to release 11 packages

Name	Type
@solidjs/compiler	Patch
@solidjs/babel-plugin	Patch
@solidjs/diagnostics	Patch
@solidjs/element	Patch
@solidjs/h	Patch
@solidjs/html	Patch
@solidjs/signals	Patch
solid-js	Patch
@solidjs/universal	Patch
@solidjs/web	Patch
test-integration	Patch

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[coveralls]

Coverage Report for CI Build 34577398077

Coverage remained the same at 71.842%

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[codspeed-hq]

Merging this PR will not alter performance

✅ 160 untouched benchmarks

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_{Comparing fix/nested-server-function-declarations (882ad7f) with next (4935c7d)}