community: fix Jira API wrapper failing initialization with cloud param (#30117)

### **Description**  
Converts the boolean `jira_cloud` parameter in the Jira API Wrapper to a
string before initializing the Jira Client. Also adds tests for the
same.

### **Issue**  
[Jira API Wrapper
Bug](8abb65e138/libs/community/langchain_community/utilities/jira.py (L47))

```python
jira_cloud_str = get_from_dict_or_env(values, "jira_cloud", "JIRA_CLOUD")
jira_cloud = jira_cloud_str.lower() == "true"
```

The above code has a bug where the value of `"jira_cloud"` is a boolean.
If it is passed, calling `.lower()` on a boolean raises an error.
Additionally, `False` cannot be passed explicitly since
`get_from_dict_or_env` falls back to environment variables.

Relevant code in `langchain_core`:  

[Source](https://github.com/thesmallstar/langchain/blob/master/.venv/lib/python3.13/site-packages/langchain_core/utils/env.py#L46)

```python
if isinstance(key, str) and key in data and data[key]:  # Here, data[key] is False
```

This PR fixes both issues.

### **Twitter Handle**  
[Manthan Surkar](https://x.com/manthan_surkar)

libs/community/langchain_community/utilities/jira.py

@@ -40,6 +40,9 @@ class JiraAPIWrapper(BaseModel):
         )
         values["jira_instance_url"] = jira_instance_url
 
+        if "jira_cloud" in values and values["jira_cloud"] is not None:
+            values["jira_cloud"] = str(values["jira_cloud"])
+
         jira_cloud_str = get_from_dict_or_env(values, "jira_cloud", "JIRA_CLOUD")
         jira_cloud = jira_cloud_str.lower() == "true"
         values["jira_cloud"] = jira_cloud