fix(indexing): escape apostrophes in LanceDB SQL path predicates

[seethinajayadileep]

Fixes #13233

Summary

LanceDbIndex built LanceDB delete/retrieve predicates by interpolating filesystem paths and cache keys into single-quoted SQL. Paths with apostrophes (don't.ts, it's a test/…) produced Unterminated string literal, so deletes failed (stale chunks stayed retrievable) and directory-filtered retrieval broke for whole workspaces.

Change

• Add escapeLanceSqlString() (SQL-standard ' → '')
• Use it for cachekey/path deletes, path LIKE retrieval filters, and UUID IN lookups
• Unit tests for the escape helper

Test plan

• Unit tests for escapeLanceSqlString
• Index a file whose path contains an apostrophe, delete/rename it, confirm chunks are removed
• Retrieve with a workspace directory that contains an apostrophe

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