relates to #20617
Adds disabled overlay to the other workflows modal on the policy page.
This required a change to the modal component to render this new overlay
and make that accessible to the consumer via a `isContentDisabled` prop

Also there are improvements to the my Add policy modal. It seemed to not
work with the new modal HTML structure so I fixed and improved how its
handling its scrollable content.
> NOTE: I did my own manual regression testing to make sure all the
modals still looked and worked properly but please tell me if you see
one that does not.
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
See [Changes
files](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/Committing-Changes.md#changes-files)
for more information.
- [x] Manual QA for all new/changed functionality
This is the feature branch for the [queued
scripts](https://github.com/fleetdm/fleet/issues/15529) story.
---------
Co-authored-by: Jahziel Villasana-Espinoza <jahziel@fleetdm.com>
Co-authored-by: Gabriel Hernandez <ghernandez345@gmail.com>
Co-authored-by: Sarah Gillespie <73313222+gillespi314@users.noreply.github.com>
Co-authored-by: Roberto Dip <dip.jesusr@gmail.com>
## Addresses #15325
- Define shared global styles for forms (`form` and `.form`s) and
`.form-field`s
- Sweep through the app, updating each form from being locally styled to
first prioritizing the global styles and only defining local styles
where needed for custom behavior
- Remove lots of unnecessary nesting of elements
- Other small bug fixes and improvements
### Samples, before (L) | after (R):
**Save query modal**

**Edit query form**

**Add hosts modal**

## QA Plan:
@xpkoala here's the same list from the issue, freshly de-checked for you
to use if it's helpful:
* Please check error states of each field
#### Specified by issue:
##### In "Save query" modal:
- [ ] Reduce space between checkboxes and their help text to 8px/0.5rem
for the following fields:
- [ ] Observers can run
- [ ] Discard data
- [ ] Update the following checkbox labels to have normal font weight
(not bold):
- [ ] Discard data
##### On "Edit query" page:
- [ ] Update the following checkbox labels to have normal font weight
(not bold):
- [ ] Observers can run
- [ ] Discard data
##### In "Add hosts" modal, for copy text fields:
- [ ] match typical form form field styles
- [ ] Adjust the positioning of the copy icon to keep it from being too
far down
##### Further locations to check
- [ ] ChangeEmailForm.jsx
- [ ] ChangePasswordForm.jsx
- [ ] ConfirmInviteForm.jsx
- [ ] ConfirmSSOInviteForm.jsx
- [ ] EnrollSecretModal.tsx
- [ ] ForgotPasswordForm.jsx
- [ ] LoginForm.tsx
- [ ] EditPackForm.tsx
- [ ] (New)PackForm.tsx
- [ ] AdminDetails.jsx
- [ ] ConfirmationPage.tsx
- [ ] FleetDetails.jsx
- [ ] OrgDetails.jsx
- [ ] ResetPasswordForm.tsx
- [ ] UserSettingsForm.jsx
- [ ] EditTeamModal.tsx
- [ ] IdpSection.tsx
- [ ] DeleteIntegrationModal.tsx
- [ ] IntegrationForm.tsx
- [ ] EndUserMigrationSection.tsx
- [ ] RequestCSRModal.tsx
- [ ] Advanced.tsx
- [ ] Agents.tsx
- [ ] FleetDesktop.tsx
- [ ] HostStatusWebhook.tsx front
- [ ] Info.tsx
- [ ] Smtp.tsx
- [ ] Sso.tsx
- [ ] Statistics.tsx
- [ ] WebAddress.tsx
- [ ] CreateTeamModal.tsx
- [ ] DeleteTeamModal.tsx
- [ ] EditTeamModal.tsx
- [ ] AgentOptionsPage.tsx
- updated the layout of this page to align with the rest of the forms in
the UI – can easily revert if it's not what we want
- [ ] AddMemberModal.tsx
- [ ] RemoveMemberModal.tsx
- [ ] UserForm.tsx
- Used by both `EditUserModal` and `CreateUserModal`
- A few different conditions that cause different rendering behavior
- [ ] DeleteHostModal.tsx
- [ ] TransferHostModal.tsx
- [ ] LabelForm.tsx
- [ ] MacOSTargetForm.tsx
- [ ] WindowsTargetForm.tsx
- [ ] BootstrapPackageListltem.ts
- [ ] EndUserAuthForm.tsx
- [ ] PackQueryEditorModal.tsx
- [ ] PolicyForm.tsx
- [ ] SaveNewPolicyModal.tsx
- [ ] ConfirmSaveChangesModal.tsx
- [ ] Query automations modal
- [ ] Policy automations modal - addresses #16010
- [ ] SoftwareAutomationsModal
## Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/`
- [x] Manual QA for all new/changed functionality
---------
Co-authored-by: Jacob Shandling <jacob@fleetdm.com>
Co-authored-by: RachelElysia <71795832+RachelElysia@users.noreply.github.com>