fix(router-core): preserve percent-encoded URL-unsafe chars in decodeSegment (#7695)

* fix(router-core): preserve percent-encoded URL-unsafe chars in decodeSegment

Replace sanitizePathSegment (which stripped control characters) with a
re-encode step that keeps WHATWG path percent-encode set characters and
control characters in their encoded form after decodeURI.

This preserves the existing decodeURI-based approach which correctly
handles multi-byte UTF-8 sequences, while fixing the mismatch between
the original request URL and the router's internal representation that
caused infinite 307 redirect loops on paths containing these characters.

Fixes #7587.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* ci: apply automated fixes

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Flo <me@florianpellet.com>