a8e27c3832
The Dialpad conferencing integration's URL regex only accepted alphanumeric characters in the meeting room path ([a-zA-Z0-9]+), causing valid personal meeting URLs containing hyphens, dots, or underscores to fail validation. For example, https://meetings.dialpad.com/mmit-russ is rejected despite being a valid Dialpad personal meeting link. The sample URL shown in the error message (alphanumeric only) passes, but real-world room names commonly use hyphens and other characters. Updated the urlRegExp character class from [a-zA-Z0-9] to [a-zA-Z0-9._-] to match all valid Dialpad meeting room slugs. Fixes issue introduced in #15444. Co-authored-by: Sahitya Chandra <sahityajb@gmail.com>