[4.x] General code cleanup (#1278)

* Declare sensitive parameters as sensitive

... just so that they don't show up in logs

* Remove unnecessary null-coalescing

* Simplify return

* Merge isset() calls

* Inline return

* Use nullsafe operator

* Simplify if-else branches

* Use direct empty string comparison instead of strlen()

* Add missing type

* Change interface as events expect a TenantWithDatabase not just a Tenant

* Narrow typehint

* Remove redundant type casts

* Fix style with php-cs-fixer

* Fix typos

* Revert unwanted if-else simplification

* fix phpstan errors

* narrow type

---------

Co-authored-by: Samuel Štancl <samuel@archte.ch>

src/Bootstrappers/BroadcastChannelPrefixBootstrapper.php

@@ -50,7 +50,7 @@ class BroadcastChannelPrefixBootstrapper implements TenancyBootstrapper
 
             $broadcasterOverride($this->broadcastManager);
 
-            // Get the overriden broadcaster
+            // Get the overridden broadcaster
             $newBroadcaster = $this->broadcastManager->driver($broadcaster);
 
             // Register the original broadcaster's channels in the new broadcaster
@@ -64,7 +64,7 @@ class BroadcastChannelPrefixBootstrapper implements TenancyBootstrapper
     {
         // Revert to the original broadcasters
         foreach ($this->originalBroadcasters as $name => $broadcaster) {
-            // Delete the cached (overriden) broadcaster
+            // Delete the cached (overridden) broadcaster
             $this->broadcastManager->purge($name);
 
             // Make manager return the original broadcaster instance

src/Bootstrappers/QueueTenancyBootstrapper.php

@@ -128,7 +128,7 @@ class QueueTenancyBootstrapper implements TenancyBootstrapper
         }
 
         // Revert back to the previous tenant
-        if (tenant() && $previousTenant && $previousTenant->isNot(tenant())) {
+        if (tenant() && $previousTenant?->isNot(tenant())) {
             tenancy()->initialize($previousTenant);
         }