mgr/dashboard: Fix failing language e2e tests

Problem: The language.e2e-spec.ts test intermittently fails with "Found 1, expected 13" — the language dropdown shows only English.

Issue: cd.js's quote-stripping regex /\"\'/g only removed the pair "', so when CMake passed "ALL" (with quotes), they stayed, langs == 'ALL' failed, and the build made English only -> e2e language test saw 1 language instead of 13.

Fix: Changed the regex to /["']/g so it strips any " or ', turning "ALL" into 'ALL'.

Signed-off-by: Afreen Misbah <afreen@ibm.com>