fix(seer onboarding): remove on_command_phrase CR trigger from settings forms (#105696)

relates to ENG-6194

depends on codecov/overwatch#622

Since we are not charging by review, let's make sure the
`on_command_phrase` trigger is always turned on and immutable in
`RepositorySettings`. We remove it from the form options and update the
help text to specify the command phrase.

Before
<img width="1398" height="207" alt="Screenshot 2026-01-06 at 12 03
10 PM"
src="https://github.com/user-attachments/assets/8fc2a159-9bb3-4b20-9df3-1f4a5d046cbf"
/>
<img width="1396" height="204" alt="Screenshot 2026-01-06 at 1 33 22 PM"
src="https://github.com/user-attachments/assets/0236e0a4-d676-45dd-a55f-cdc199d5ad53"
/>
After
<img width="1396" height="218" alt="Screenshot 2026-01-06 at 1 25 07 PM"
src="https://github.com/user-attachments/assets/b793d527-4f59-465a-a8a0-f001329bde00"
/>
<img width="1396" height="218" alt="Screenshot 2026-01-06 at 1 33 04 PM"
src="https://github.com/user-attachments/assets/874fe826-fd99-4846-81ce-6a522232cedc"
/>

Author: srest2021

static/gsApp/views/seerAutomation/components/repoDetails/repoDetailsForm.tsx

@@ -1,6 +1,6 @@
 import Form from 'sentry/components/forms/form';
 import JsonForm from 'sentry/components/forms/jsonForm';
-import {t} from 'sentry/locale';
+import {t, tct} from 'sentry/locale';
 import {
   DEFAULT_CODE_REVIEW_TRIGGERS,
   type RepositoryWithSettings,
@@ -57,13 +57,13 @@ export default function RepoDetailsForm({organization, repoWithSettings}: Props)
               {
                 name: 'codeReviewTriggers',
                 label: t('Code Review Triggers'),
-                help: t(
-                  'Reviews can run on demand, whenever a PR is opened, or after each commit is pushed to a PR.'
+                help: tct(
+                  'Reviews can always run on demand by calling [code:@sentry review], whenever a PR is opened, or after each commit is pushed to a PR.',
+                  {code: <code />}
                 ),
                 type: 'choice',
                 multiple: true,
                 choices: [
-                  ['on_command_phrase', t('On Command Phrase')],
                   ['on_ready_for_review', t('On Ready for Review')],
                   ['on_new_commit', t('On New Commit')],
                 ],

static/gsApp/views/seerAutomation/settings.tsx

@@ -98,13 +98,13 @@ export default function SeerAutomationSettings() {
                 {
                   name: 'defaultCodeReviewTriggers',
                   label: t('Code Review Triggers'),
-                  help: t(
-                    'Reviews can run on demand, whenever a PR is opened, or after each commit is pushed to a PR.'
+                  help: tct(
+                    'Reviews can always run on demand by calling [code:@sentry review], whenever a PR is opened, or after each commit is pushed to a PR.',
+                    {code: <code />}
                   ),
                   type: 'choice',
                   multiple: true,
                   choices: [
-                    ['on_command_phrase', t('On Command Phrase')],
                     ['on_ready_for_review', t('On Ready for Review')],
                     ['on_new_commit', t('On New Commit')],
                   ],