fix(compat/lastIndexOf): coerce fromIndex like lodash

src/compat/array/lastIndexOf.spec.ts

@@ -48,6 +48,14 @@
 
   it(`should coerce \`fromIndex\` to an integer`, () => {
     expect(lastIndexOf(array, 2, 4.2)).toBe(4);
+    expect(lastIndexOf(array, 1, '-1' as any)).toBe(3);
+  });
+
+  it(`should coerce null and boolean \`fromIndex\` values to integers`, () => {
+    expect(lastIndexOf(array, 1, null as any)).toBe(0);
+    expect(lastIndexOf(array, 2, null as any)).toBe(-1);
+    expect(lastIndexOf(array, 1, false as any)).toBe(0);
+    expect(lastIndexOf(array, 1, true)).toBe(0);
   });
 
   it(`should return -1 for empty array or nullish values`, () => {

src/compat/array/lastIndexOf.ts

@@ -1,4 +1,5 @@
 import { isArrayLike } from '../predicate/isArrayLike.ts';
+import { toInteger } from '../util/toInteger.ts';
 
 /**
  * Gets the index at which the last occurrence of value is found in array.
@@ -36,8 +37,8 @@ export function lastIndexOf<T>(
 
   const length = array.length;
 
-  let index = (fromIndex as number) ?? length - 1;
-  if (fromIndex != null) {
+  let index = fromIndex === undefined ? length - 1 : toInteger(fromIndex);
+  if (fromIndex !== undefined) {
     index = index < 0 ? Math.max(length + index, 0) : Math.min(index, length - 1);
   }