fix(shared): prevent composer modal content overflow with vertical scrolling

[Rishiii57]

Fixes dailydotdev/daily#2146

Changes

• Added overflow-y-auto to TextForm's flex container (packages/shared/src/components/post/composer/TextForm.tsx).
• When writing or sharing a post/comment with long content or cover image in the "New post" modal, the content now scrolls cleanly within the card boundaries instead of overflowing outside the modal.

Events

No new tracking events introduced.

Experiment

No new experiments introduced.

Manual Testing

On those affected packages:

• Have you done sanity checks in the webapp?
• Have you done sanity checks in the extension?
• Does this not break anything in companion?

Did you test the modified components media queries?

• MobileL (420px)
• Tablet (656px)
• Laptop (1020px)

[vercel]

@Rishiii57 is attempting to deploy a commit to the Daily Dev Team on Vercel.

A member of the Team first needs to authorize it.

[CLAassistant]

All committers have signed the CLA.