Alerting : Jira connector returns 400

### What happened? When attempted to test create JIRA ticket with the JIRA Contact Point Grafana throws 400 error. <img width="640" height="302" alt="Image" src="https://github.com/user-attachments/assets/de0f6bd3-72f9-4f0e-ac31-fd03434b4589" /> ### What did you expect to happen? A JIRA ticket gets created. ### Did this work before? **Yes , was working in 11.6.2** **Upgrading to 12.0.0 resulted in** - Failed to send test alert.: failed to look up existing issues: HTTP request to JIRA API: webhook failed validation: unexpected status code 404: <?xml version="1.0" encoding="UTF-8" standalone="yes"?><status><status-code>404</status-code><message>HTTP 404 Not Found</message></status> Root cause -<jira_url>/rest/api/2/search/jql • Before Upgrade: <jira_url>/rest/api/2/search → Response: 200 <image004.png> • After Upgrade: <jira_url>/rest/api/2/search/jql Response: 404 **Fix was provided in 12.0.8 -** **Now in 12.0.8 -** Failed to send test alert.: failed to look up existing issues: HTTP request to JIRA API: webhook failed validation: unexpected status code 400: {"errorMessages":["Cannot coerce empty String (\"\") to element of `java.util.ArrayList` (but could if coercion was enabled using `CoercionConfig`)\n at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 11] (through reference chain: com.atlassian.jira.rest.v2.search.SearchRequestBean[\"expand\"]) [af193dfd-07c5-4861-bb36-ed3ee608270d]"]} ### How do we reproduce it? 1.Install Grafana 12.0.8 2.Alerting -> Contact Points ->Jira contact point 3.Test ### Is the bug inside a dashboard panel? _No response_ ### Environment (with versions)? Grafana:12.0.8 OSS (rpm installation) OS:Linux Browser: Chrome Jira ServiceDesk Datacenter - 10.3.13 ### Grafana platform? A downloaded binary ### Datasource(s)? _No response_