Events widget: use compact input and button

[Joen]

The new admin styles look great. The Events widget could use the "compact" input and button styles, however, the 32px height ones.

[Joen]

Events widget

[audrasjb]

Adding good-first-bug as this would be a good one to pick for any new contributor willing to send their first patch/PR.

[audrasjb]

Using compact styles

[audrasjb]

Compact styles for input:

    min-height: 32px;
    line-height: 2.14285714;
    padding: 0 8px;

Compact styles for button:

    min-height: 32px;
    line-height: 2.30769231;
    padding: 0 12px;

[sachinrajcp123]

Patch adds compact admin styles (32px) to Events widget input and button. Uses existing small utility classes.

Trac ticket: #64777

Applies the 32px compact styles to the Dashboard's Events widget input and submit button

## Use of AI Tools

Hi @amesplant
Could you please connect your WordPress.org account with your GitHub account?
Guide: ​https://make.wordpress.org/core/2020/03/19/associating-github-accounts-with-wordpress-org-profiles/

[amesplant]

@huzaifaalmesbah WordPress.org account is now connected to my GitHub account.

[joedolson]

In 61852:

Admin: Use compact styles in Events dashboard widget.

Change the inputs for setting event location to use the compact input heights.

Props joen, audrasjb, huzaifaalmesbah, amesplant, joedolson.
Fixes #64777.