Ensure that strict empty handling always happens

src/Psalm/Internal/Type/SimpleNegatedAssertionReconciler.php

@@ -555,7 +555,7 @@ class SimpleNegatedAssertionReconciler extends Reconciler
             || $existing_var_type->possibly_undefined_from_try
             || $existing_var_type->hasType('iterable');
 
-        if ($is_strict_equality && $assertion === 'empty') {
+        if ($assertion === 'empty') {
             $existing_var_type->removeType('null');
             $existing_var_type->removeType('false');
 

tests/TypeReconciliation/EmptyTest.php

@@ -375,6 +375,20 @@ class EmptyTest extends \Psalm\Tests\TestCase
 
                     if (empty($d[0])) {}'
             ],
+            'reconcileNonEmptyArrayKey' => [
+                '<?php
+                    /**
+                     * @param array{a?: string, b: string} $arr
+                     */
+                    function createFromString(array $arr): void
+                    {
+                        if (empty($arr["a"])) {
+                            return;
+                        }
+
+                        echo $arr["a"];
+                    }'
+            ],
         ];
     }