Add index signature for anonymous object literal type (#37903)

* Use ts.map for stylistic consistency

* Show error only if noImplicitAny is set

* Accept baseline for noImplicitAnyIndexing

* Fix lint error

* Add test cases for indexedAccessWithFreshObjectLiteral

tests/cases/compiler/indexedAccessWithFreshObjectLiteral.ts

@@ -0,0 +1,55 @@
+// @strict: true
+
+function foo (id: string) {
+  return {
+      a: 1,
+      b: "",
+      c: true
+  }[id]
+}
+
+function bar (id: 'a' | 'b') {
+  return {
+      a: 1,
+      b: "",
+      c: false
+  }[id]
+}
+
+function baz (id: '1' | '2') {
+  return {
+      1: 1,
+      2: "",
+      3: false
+  }[id]
+}
+
+function qux (id: 1 | 2) {
+  return {
+      1: 1,
+      2: "",
+      3: false
+  }[id]
+}
+
+function quux (id: 'a' | 'b' | 'z') {
+  return {
+      a: 1,
+      b: "",
+      c: false
+  }[id]
+}
+
+function corge(id: string) {
+  return ({
+      a: 123,
+      b: ""
+  } as Record<string, number | string>)[id]
+}
+
+function grault(id: string) {
+  return ({
+      a: 123,
+      b: ""
+  } as { [k: string]: string | number})[id]
+}