Fix UI issues with event import and display

[travisdock]

• Fix import preview modal not visible on long pages by using min-h-screen instead of min-h-full for proper viewport centering
• Fix long URLs overflowing in event show page by adding break-words to location and description fields
• Allow vertical resizing of description textarea in event form

[Copilot]

Pull request overview

Improves Events UI behavior for long content and long pages by adjusting Tailwind utility classes to prevent overflow and ensure modals are properly centered in the viewport.

Changes:

• Prevent long location/description strings (e.g., URLs) from overflowing on the event show page by enabling word breaking.
• Ensure the import preview modal centers correctly on long pages by using viewport-based minimum height.
• Allow vertical resizing of the event description textarea in the event form.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
app/views/events/show.html.erb	Adds break-words to location/description display to prevent overflow from long strings.
app/views/events/_import_form.html.erb	Switches modal container from min-h-full to min-h-screen for reliable viewport centering.
app/views/events/_form.html.erb	Changes textarea from resize-none to resize-y to allow vertical resizing.

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