solidjs / solid / 33901035027

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refactor(signals): relocate #3277's uninitialized lane check to laneSuspends

No behavior change. The uninitialized cross-lane suspension merged in
8f9f3696 sat inline in core read()'s throw path, taxing every bundle —
storeless floors included — for a check only reachable under an optimistic
lane (which implies the engine is installed). Measured 27-66 B over across
five size scenarios; next was over budget since the merge (Size is not a
required check, which is how it landed red — same gap as #3262 this
morning). In laneSuspends, only bundles retaining the optimistic module
pay: every scenario is back under cap except isPending/latest, which
retains the module via latest()'s shadow and pays ~8 B — ratcheted
10.05 -> 10.08 with the audit note.

Co-authored-by: Cursor <cursoragent@cursor.com>

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