Strict-validate-path-type does not allow period/dot/. in Exact or Prefix path

What happened:

The documentation mentions the following text:

When pathType is configured as Exact or Prefix, there should be a more strict validation, allowing only paths starting with "/" and containing only alphanumeric characters and "-", "_" and additional "/".

However the term alphanumeric characters is not specified and the term does not seem to be universally specified either. Some sources for example include special characters in alphanumeric characters, which seems to defeat the purpose of the strict checking.

The current text, depending on the definition of alphanumeric characters, seems to suggest that for example the period . character is not allowed when using Exact or Prefix. This would mean that a path of https://example.com/index.html, https://example.com/.well-known/openid-configuration or https://example.com/.well-known/acme-challenge/3857265 would be invalid for path type Exact and Prefix. I cannot imagine that it's intentional that all these super common url's would be unsupported by Exact or Prefix.

What you expected to happen:

Define the term alphanumeric characters as used by this project and allow . in Exact and Prefix path types.

/kind documentation
/remove-kind bug