[RHOAIENG-2404] Replace simple deprecated PF selects with SimpleSelect

[jeff-phillips-18]

Towards RHOAIENG-2404

Description

Updates SimpleDropdownSelect to SimpleSelect using the PF Select component rather than Dropdown. This provides the checkmark indicators for the current selection in the menu items.
Replace simple usages of PF Select component with SimpleSelect.

How Has This Been Tested?

Manually tested
Updated Cypress tests

Test Impact

The following components are effected:

• Resources -> Sort type select and sort order select
• Model Serving -> click on a model name: Time range and Refresh interval select drop downs.
• Data Science Projects -> select a project -> permissions tab:
  Add user -> username selector
  Add group -> group name selector
• Data Science Projects -> select a project -> workbench tab -> create a workbench:
  Image Selection
  Version selection
  Container size
  Environment variables -> Add variable:
  Select environment variable type
  Select environment variable type -> secret -> either -> select one
• Data Science Projects -> Launch Jupyter -> select container size

Request review criteria:

Self checklist (all need to be checked):

• The developer has manually tested the changes and verified that the changes work
• Commits have been squashed into descriptive, self-contained units of work (e.g. 'WIP' and 'Implements feedback' style messages have been removed)
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has added tests or explained why testing cannot be added (unit or cypress tests for related changes)

[jenny-s51]

Changes are looking good @jeff-phillips-18 ! Tested all the Select menus listed in the PR description.

I noticed the checkmarks aren't getting set in the Select menus under permission settings:

Left another comment below, aside from that LGTM, other menus working as expected.

[jenny-s51]

Looks like this width isn't getting applied:

Before:

After:

Though I'm curious why this width was applied here in the first place (outside of this PR), since we would expect the fields to be the same width if they're part of the same form section

[jeff-phillips-18]

I noticed the checkmarks aren't getting set in the Select menus under permission settings:

Fixed.

[jenny-s51]

/lgtm

[christianvogt]

Tested all referenced areas to be working.

[christianvogt]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: christianvogt, jenny-s51

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