fix: refactor common selects

[jfdoming]

Notion ticket link

Work as part of Add start / end time in test session

Implementation description

Medium-size refactor to selects within the app to use a common component. Rationale:

1. UI standardization: we currently have several different variants of Select components used throughout the app. This PR merges them all to one definition.
2. Code reuse: this moves a bunch of logic into a standard component, and simplifies access patterns (no more manual typing necessary). This is in preparation for the time picker, which uses selects.

Steps to test

1. View the selects I updated (mainly: teacher creation, student sign-in, table filtering, multi-option assessment creation) and make sure they look good.

What should reviewers focus on?

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have run the appropriate linter(s)
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[github-actions]

Visit the preview URL for this PR (updated for commit 8308a7e):

https://jump-math-staging--pr603-julian-refactor-comm-jucdvw4b.web.app

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[carissa-tang]

love the refactor!

[carissa-tang]

another case to check:

1. create test and save
2. fails bc grade level is [grade_value] instead of grade_value

[carissa-tang]

i remember we had this issue with the short answer input. now i see it with MC and multiselect. is this an easy fix?

Screen.Recording.2023-10-29.at.11.31.22.PM.mov

[carissa-tang]

do you mind updating these two modals as well to replace the generic top message and remove the bottom one? for consistency

[jfdoming]

@carissa-tang ready for review!

[carissa-tang]

nice !!