Summary by cubic

Fix URL param encoding by removing the %00 replacement in AxiosURLSearchParams to avoid inserting null bytes. The regex now skips %00, leaving it percent-encoded.

Description

• Summary of changes

  • Removed %00 from the char map and from the regex in encode.
  • Keeps %20 → + and replacements for ! ' ( ) ~.

• Reasoning

  • encodeURIComponent returns %00 for a null byte.
  • Replacing it with \x00 injected a raw null, which is invalid and can break consumers.

• Additional context

  • Matches standard URL encoding expectations by keeping %00 as-is.

Docs

No docs changes needed. Behavior now matches expected form-encoding.

Testing

No tests were updated in this PR.

• Recommended: add tests to assert:
  • Encoding "\x00" yields %00 (not a raw null).
  • Spaces still encode to +.
  • Existing replacements for ! ' ( ) ~ remain correct.

^{Written for commit 1c03ffe. Summary will update on new commits.}