fix(react-router): fix regex handling for URLs containing newline characters

[rururux]

Currently, with the implementation of compilePath, routes like /* do not match when the URL starts with a newline character (%0A).
This is because the regular expression generated in the compilePath function does not have the s (single line) flag set.
This PR adds the s flag to the regular expression used for route matching and includes test cases to verify the behavior.

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