Update crowdin action to include ability to manually trigger a translation pull

@desi is already working on this.

Since Aug 2, 2024.

### What is this about?

Sometimes we have situations where translations are not correct. We are generally able to get our translation partner to correct these rather quickly however, since our crowdin action only runs once every 12 hours we have to wait until the next run in order to get the updates.

We'd like to add the ability to manually trigger the action when needed.

### Scenario

- Given I am a MM developer
- And I have available translations that I can get from crowdin
- And I manually trigger the crowdin action
- Then a new PR is created (or an existing one is updated) to get the new translations on demand

### Design

n/a

### Technical Details

Add `workflow_dispatch` above `schedule:` in [Crowdin Action ](https://github.com/MetaMask/metamask-extension/blob/e5651cfe3580db9ed49a31b3b6fe6e00f1b9b47e/.github/workflows/crowdin-action.yml#L11)

### Threat Modeling Framework

_No response_

### Acceptance Criteria

Acceptance Criteria
- [Go to github action](https://github.com/MetaMask/metamask-extension/actions/workflows/crowdin-action.yml)
- Click on "run workflow"

- This is working correctly if you can even see the button above

### Stakeholder review needed before the work gets merged

- [X] Engineering (needed in most cases)
- [ ] Design
- [ ] Product
- [ ] QA (automation tests are required to pass before merging PRs but not all changes are covered by automation tests - please review if QA is needed beyond automation tests)
- [ ] Security
- [ ] Legal
- [ ] Marketing
- [ ] Management (please specify)
- [ ] Other (please specify)

### References

_No response_