Fix page overflow with long MR titles

changed milestone to %16.10

added bugux frontend groupcode review merge requests typebug labels

@iamphill hi! Could you please review this small fix when you have time?

requested review from @iamphill

added backend label

	2 Warnings
	This merge request contains lines with testid selectors. Please ensure `e2e:package-and-test` job is run.
	You've made some app changes, but didn't add any tests. That's OK as long as you're refactoring existing code, but please consider adding any of the maintenancepipelines, maintenancerefactor, maintenanceworkflow, documentation, QA labels.

`testid` selectors

The following changed lines in this MR contain testid selectors:

`app/views/projects/merge_requests/_mr_title.html.haml`

-      %h1.title.page-title.gl-font-size-h-display.gl-my-0.gl-display-inline-block.gl-flex-grow-1{ data: { testid: 'title-content' } }
+      %h1.title.page-title.gl-font-size-h-display.gl-my-0.gl-display-inline-block.gl-flex-grow-1.gl-word-break-word{ data: { testid: 'title-content' } }

If the e2e:package-and-test job in the qa stage has run automatically, please ensure the tests are passing. If the job has not run, please start the trigger-omnibus-and-follow-up-e2e job in the qa stage and ensure the tests in follow-up-e2e:package-and-test-ee pipeline are passing.

For the list of known failures please refer to the latest pipeline triage issue.

If your changes are under a feature flag, please check our Testing with feature flags documentation for instructions.

Reviewer roulette

Category	Reviewer	Maintainer
backend	`@praba.m7n` (UTC+1, 3 hours behind author)	`@bmarjanovic` (UTC+1, 3 hours behind author)
frontend	`@viktomas` (UTC+1, 3 hours behind author)	`@blabuschagne` (UTC+1, 3 hours behind author)

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Generated by Danger

Bundle size analysis [beta]

This compares changes in bundle size for entry points between the commits 92767698 and 4200b87f

Special assets

Entrypoint / Name	Size before	Size after	Diff	Diff in percent
average	4.21 MB	4.21 MB	-	0.0 %
mainChunk	3.21 MB	3.21 MB	-	0.0 %

Note: We do not have exact data for 92767698. So we have used data from: 3d7dfd06.
The intended commit has no webpack pipeline, so we chose the last commit with one before it.

Please look at the full report for more details

E2E Test Result Summary

allure-report-publisher generated test report!

e2e-test-on-gdk: test report for 4200b87f

expand test summary

+------------------------------------------------------------------+
|                          suites summary                          |
+-------------+--------+--------+---------+-------+-------+--------+
|             | passed | failed | skipped | flaky | total | result |
+-------------+--------+--------+---------+-------+-------+--------+
| Create      | 66     | 0      | 9       | 0     | 75    | ✅     |
| Plan        | 4      | 0      | 0       | 0     | 4     | ✅     |
| Govern      | 3      | 0      | 0       | 0     | 3     | ✅     |
| Monitor     | 4      | 0      | 0       | 0     | 4     | ✅     |
| Package     | 0      | 0      | 1       | 0     | 1     | ➖     |
| Data Stores | 2      | 0      | 0       | 0     | 2     | ✅     |
+-------------+--------+--------+---------+-------+-------+--------+
| Total       | 79     | 0      | 10      | 0     | 89    | ✅     |
+-------------+--------+--------+---------+-------+-------+--------+

e2e-package-and-test: test report for 4200b87f

expand test summary

+------------------------------------------------------------------+
|                          suites summary                          |
+-------------+--------+--------+---------+-------+-------+--------+
|             | passed | failed | skipped | flaky | total | result |
+-------------+--------+--------+---------+-------+-------+--------+
| Create      | 566    | 0      | 58      | 16    | 624   | ✅     |
| Plan        | 8      | 0      | 0       | 0     | 8     | ✅     |
| Govern      | 6      | 0      | 0       | 0     | 6     | ✅     |
| Monitor     | 8      | 0      | 0       | 0     | 8     | ✅     |
| Data Stores | 4      | 0      | 0       | 0     | 4     | ✅     |
| Package     | 0      | 0      | 2       | 0     | 2     | ➖     |
+-------------+--------+--------+---------+-------+-------+--------+
| Total       | 592    | 0      | 60      | 16    | 652   | ✅     |
+-------------+--------+--------+---------+-------+-------+--------+