Fix duplicated-word and misspelled comment/doc typos

[durvesh1992]

Summary

Fixes comment-only and documentation typos found via an inspection-only sweep of the codebase (dual pass: duplicated-word regex + common-misspelling wordlist, each hit manually confirmed). No code logic is changed — every edit is inside a ////// comment, a block comment, or a Markdown doc.

I deliberately excluded candidates already covered by the open typo PRs #1976 and #1656, as well as enviroment (#1900). Generated/vendored trees (external/, third-party/, benchmarks/ vendored JS) and test CHECK fixtures were skipped.

Categories

• Duplicated words (the the, with with, for for, that that, from from, in in, we we, and and, but but, It it, If if): 18 fixes
• Misspellings (Overriden->Overridden ×3, funciton->function ×2, Supress->Suppress, sucessfully->successfully, Wether->Whether): 7 fixes

Before / After (sample)

File:Line	Before	After
include/hermes/Regex/Regex.h:88	Construct and and append	Construct and append
include/hermes/VM/ArrayStorage.h:54	\return The the maximum	\return The maximum
include/hermes/VM/ModuleExportsCache.h:26	If if \p modIndex	If \p modIndex
lib/Support/BigIntSupport.cpp:410	filled with with the most	filled with the most
lib/Support/OSCompatPosix.cpp:502	number from from statm	number from statm
lib/VM/DictPropertyMap.cpp:174	It it happens	It happens
doc/IR.md:217,228,238,248	The the instruction	The instruction
include/hermes/BCGen/HBC/BCProvider.h:278	in funciton	in function
include/hermes/Support/SourceErrorManager.h:171	Supress errors	Suppress errors
include/hermes/Support/SourceErrorManager.h:476	If sucessfully decoded	If successfully decoded
API/hermes/CompileJS.h:48	Wether to generate	Whether to generate
tools/hermes-parser/.../HermesASTAdapter.js:76,107	Overriden in child classes	Overridden in child classes

Full set: 25 single-token fixes across 18 files (git diff --stat: 25 insertions, 25 deletions).

[avp]

Sorry, we don't take typo PRs on this repo.