Fixes media library video CORS error and validation fixes

This release fixes critical issues with field validation on multiple field types, resolves CORS errors with media library video fields, and corrects image crop preview rendering.

• Fixes an issue where the inline comment button in Portable Text inputs would intermittently not appear on the first text selection when the editor was not already focused.
• Fixes a CORS error when using media library video fields in your schema.
• Fixes a crash where url, number, and array fields became unusable, showing "An error occurred" instead of an input, when their validation used the two-argument form that receives the validation context.
• Fixes a regression where the crop and hotspot previews in the image input rendered a horizontally squashed image that did not match the configured crop.
• Fixed an issue where the inline comment button in Portable Text inputs would intermittently not appear on the first text selection when the editor was not already focused.