Fix infinite rerenders for a disabled boolean input.

Author: Madeorsk

packages/ra-core/src/form/useApplyInputDefaultValues.ts

@@ -32,7 +32,7 @@ export const useApplyInputDefaultValues = ({
     isArrayInput,
     fieldArrayInputControl,
 }: Props) => {
-    const { defaultValue, source } = inputProps;
+    const { defaultValue, source, disabled } = inputProps;
     const finalSource = useWrappedSource(source);
 
     const record = useRecordContext(inputProps);
@@ -46,6 +46,9 @@ export const useApplyInputDefaultValues = ({
         if (
             defaultValue == null ||
             formValue != null ||
+            // When the input is disabled, its value may always be undefined, no matter the default value.
+            // This prevents from trying to reset the value indefinitely.
+            disabled ||
             // We check strictly for undefined to avoid setting default value
             // when the field is null
             recordValue !== undefined ||