Sync Azure environment resolution logic with Go SDK (#667)

## What changes are proposed in this pull request?

### Summary
Unified the Azure environment resolution logic between
`getAzureEnvironment()` and `getDatabricksEnvironment()` to ensure
consistent behavior and sync with the Go SDK implementation.
### Problem
Previously, `getAzureEnvironment()` and `getDatabricksEnvironment()` had
separate, independent logic for resolving Azure environments, which
could lead to inconsistent results:

- `getAzureEnvironment()` always defaulted to "PUBLIC" and directly
called `AzureEnvironment.getEnvironment()`
- `getDatabricksEnvironment()` had its own Azure environment matching
logic that was only triggered when `host == null`

This divergence meant that `config.getAzureEnvironment()` and
`config.getDatabricksEnvironment().getAzureEnvironment()` could return
different values for the same configuration.

  ### Changes

1. **Unified environment resolution**: `getAzureEnvironment()` now
delegates to `getDatabricksEnvironment().getAzureEnvironment()` instead
of maintaining separate logic

2. **Expanded Azure environment matching condition**: Updated
`getDatabricksEnvironment()` to trigger Azure environment matching when:
     - `azureWorkspaceResourceId` is set AND
     - Either `host` is null OR `azureEnvironment` is explicitly set

This allows users to explicitly override the environment even when a
host is configured.

3. **Updated test**: Modified
`DatabricksAuthManualTest.azureCliUserWithManagementAccess` to
explicitly set `azureEnvironment("PUBLIC")` to reflect the new unified
behavior.

 ## Testing
  - All 1067 tests passing ✅
- Verified Azure CLI authentication works correctly with explicit
environment setting
- Confirmed consistent behavior between `getAzureEnvironment()` and
`getDatabricksEnvironment().getAzureEnvironment()`

Author: hectorcast-db

NEXT_CHANGELOG.md

@@ -6,6 +6,8 @@
 
 ### Bug Fixes
 
+* Fixed inconsistent Azure environment resolution between `getAzureEnvironment()` and `getDatabricksEnvironment()` methods ([#XXX](https://github.com/databricks/databricks-sdk-java/pull/XXX))
+
 ### Security Vulnerabilities
 
 ### Documentation

databricks-sdk-java/src/main/java/com/databricks/sdk/core/DatabricksConfig.java

@@ -532,11 +532,7 @@ public DatabricksConfig setAzureTenantId(String azureTenantId) {
   }
 
   public AzureEnvironment getAzureEnvironment() {
-    String env = "PUBLIC";
-    if (azureEnvironment != null) {
-      env = azureEnvironment;
-    }
-    return AzureEnvironment.getEnvironment(env);
+    return getDatabricksEnvironment().getAzureEnvironment();
   }
 
   public DatabricksConfig setAzureEnvironment(String azureEnvironment) {
@@ -871,10 +867,11 @@ public DatabricksEnvironment getDatabricksEnvironment() {
       return this.databricksEnvironment;
     }
 
-    if (this.host == null && this.azureWorkspaceResourceId != null) {
+    if ((this.host == null || this.azureEnvironment != null)
+        && this.azureWorkspaceResourceId != null) {
       String azureEnv = "PUBLIC";
-      if (this.azureEnvironment != null) {
-        azureEnv = this.azureEnvironment;
+      if (this.azureEnvironment != null && !this.azureEnvironment.isEmpty()) {
+        azureEnv = this.azureEnvironment.toUpperCase();
       }
       for (DatabricksEnvironment env : DatabricksEnvironment.ALL_ENVIRONMENTS) {
         if (env.getCloud() != Cloud.AZURE) {

databricks-sdk-java/src/test/java/com/databricks/sdk/DatabricksAuthManualTest.java

@@ -50,6 +50,7 @@ void azureCliUserWithManagementAccess() {
         createConfigWithMockClient()
             .setAuthType("azure-cli")
             .setHost("https://x")
+            .setAzureEnvironment("PUBLIC")
             .setAzureWorkspaceResourceId(azureWorkspaceResourceId);
     resolveConfig(config, env);
     Map<String, String> headers = config.authenticate();