fix: Parent container scrolls when select opens

[YueyingLu]

Description

Fix issue AWSUI-60318

Issue:
When Select locates top inside of a overflow:hidden container and at the bottom of the window, the select can not open upwards because overflow:hidden and has little space downwards to display the dropdown. When open the dropdown with a selected option, the page scrolls up. See screen recording in the ticket.

Cause:

1. When dropdown has very small space to display, the height is calculated to a negative number (because 50 padding we usually have for the dropdown) https://github.com/cloudscape-design/components/blob/main/src/internal/components/dropdown/dropdown-fit-handler.ts#L294. Negative value does not limit the height, so the dropdown overflows out of the view port.
2. When an option is pre-selected, the option scrolls into view https://github.com/cloudscape-design/components/blob/main/src/select/parts/plain-list.tsx#L52, so the container scrolls up.

Fix:

1. Set a minimum height 15px to the dropdown.
2. Stop scrolling the selected option if the dropdown height is <=15px. In this case, the dropdown content is not really readable, scrolling it does not give benefit but can cause page scroll (when the dropdown overflows the viewport).

Test:
Tested manually and added integ tests in the PR.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.41%. Comparing base (f8f32c5) to head (4f75634).
Report is 5 commits behind head on main.

Additional details and impacted files

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##             main    #3292   +/-   ##
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  Coverage   96.41%   96.41%           
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  Files         791      791           
  Lines       22564    22564           
  Branches     7727     7789   +62     
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  Hits        21756    21756           
  Misses        754      754           
  Partials       54       54           

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