chore(bitbucket): Truncate issue link title length (#95290)

Should reduce failures in SLOs

From GCP logs:
```
event: "integrations.slo.failure"
exception_summary: "IntegrationError('Error Communicating with Bitbucket (HTTP 400): title: Ensure this value has at most 255 characters (it has 288).')"
```

Author: leeandher

src/sentry/integrations/bitbucket/issues.py

@@ -17,10 +17,12 @@
 from sentry.users.models.identity import Identity
 from sentry.users.models.user import User
 from sentry.users.services.user import RpcUser
+from sentry.utils.strings import truncatechars
 
 # Generated based on the response from the Bitbucket API
 # Example: {"type": "error", "error": {"message": "Repository has no issue tracker."}}
 BITBUCKET_HALT_ERROR_CODES = ["Repository has no issue tracker.", "Resource not found"]
+BITBUCKET_MAX_TITLE_LENGTH = 255
 
 
 ISSUE_TYPES = (
@@ -72,6 +74,13 @@ def get_create_issue_config(
             "sentry-extensions-bitbucket-search", args=[org.slug, self.model.id]
         )
 
+        title_field = next((field for field in fields if field["name"] == "title"), None)
+        if title_field:
+            title_field["maxLength"] = BITBUCKET_MAX_TITLE_LENGTH
+            title_field["default"] = truncatechars(
+                title_field["default"], BITBUCKET_MAX_TITLE_LENGTH
+            )
+
         return [
             {
                 "name": "repo",

tests/sentry/integrations/bitbucket/test_issues.py

@@ -1,13 +1,14 @@
 import orjson
 import responses
 
-from sentry.integrations.bitbucket.issues import ISSUE_TYPES, PRIORITIES
+from sentry.integrations.bitbucket.issues import BITBUCKET_MAX_TITLE_LENGTH, ISSUE_TYPES, PRIORITIES
 from sentry.integrations.models.external_issue import ExternalIssue
 from sentry.integrations.services.integration import integration_service
 from sentry.testutils.cases import APITestCase
 from sentry.testutils.factories import EventType
 from sentry.testutils.helpers.datetime import before_now
 from sentry.testutils.skips import requires_snuba
+from sentry.utils.strings import truncatechars
 
 pytestmark = [requires_snuba]
 
@@ -211,6 +212,7 @@ def test_get_create_issue_config(self):
                 "default": "message",
                 "type": "string",
                 "required": True,
+                "maxLength": BITBUCKET_MAX_TITLE_LENGTH,
             },
             {
                 "name": "description",
@@ -237,6 +239,28 @@ def test_get_create_issue_config(self):
             },
         ]
 
+    @responses.activate
+    def test_get_create_issue_config_with_long_title(self):
+        responses.add(
+            responses.GET,
+            "https://api.bitbucket.org/2.0/repositories/myaccount",
+            json={"values": [{"full_name": "myaccount/repo1"}, {"full_name": "myaccount/repo2"}]},
+        )
+        installation = self.integration.get_installation(self.organization.id)
+        event = self.store_event(
+            data={
+                "event_id": "a" * 32,
+                "message": "b" * 5000,
+                "timestamp": before_now(minutes=1).isoformat(),
+            },
+            project_id=self.project.id,
+        )
+        config = installation.get_create_issue_config(event.group, self.user)
+        title_field = next(field for field in config if field["name"] == "title")
+        assert title_field
+        assert title_field["default"] == truncatechars(event.message, BITBUCKET_MAX_TITLE_LENGTH)
+        assert title_field["maxLength"] == BITBUCKET_MAX_TITLE_LENGTH
+
     @responses.activate
     def test_get_create_issue_config_without_group(self):
         responses.add(