feat: add `assert/is-palindrome`#9882

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therealharshit wants to merge 3 commits intostdlib-js:developfrom

therealharshit:feat/is-palindrome

Commits on Jan 24, 2026

feat: add assert/is-palindrome
therealharshit
committed

Commits on Feb 12, 2026

fix: handle Unicode grapheme clusters and add related tests
therealharshit
committed

Commits on Mar 2, 2026

chore: update is-palindrome to strictly validates string input and correctly handles Unicode grapheme clusters
therealharshit
committed