[ML] Improve expired license check (#191503)

When a trial license expires, the license falls into a state where it is
not seen as being a valid basic license, but rather an "expired"
license.
The license is still valid and our `isMinimumLicense` check needs to
return true in this situation to allow the ML app to redirect to the
expired license page.

Before (ML page fails to load):


![image](https://github.com/user-attachments/assets/0e73b2a5-0645-4253-9737-1393fe58f8a1)



After (we redirect to the license page):


![image](https://github.com/user-attachments/assets/3f579c1e-ee7f-45e8-87d3-258caa5d42c2)

x-pack/plugins/ml/common/license/ml_license.ts

@@ -135,7 +135,7 @@ export function isTrialLicense(license: ILicense) {
 }
 
 export function isMinimumLicense(license: ILicense) {
-  return license.check(PLUGIN_ID, MINIMUM_LICENSE).state === 'valid';
+  return license.check(PLUGIN_ID, MINIMUM_LICENSE).state === 'valid' || license.isAvailable;
 }
 
 export function isMlEnabled(license: ILicense) {