LibJS/Tests: Fix bad copy and paste that crept into a lot of tests

The top-level function should have been `describe()``, but instead it's
been nested `test()`s.

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochMicroseconds.js

@@ -24,7 +24,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("argument must be coercible to BigInt", () => {
         expect(() => {
             Temporal.Instant.fromEpochMicroseconds(123);

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochMilliseconds.js

@@ -24,7 +24,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("argument must be coercible to BigInt", () => {
         expect(() => {
             Temporal.Instant.fromEpochMilliseconds(1.23);

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochNanoseconds.js

@@ -24,7 +24,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("argument must be coercible to BigInt", () => {
         expect(() => {
             Temporal.Instant.fromEpochNanoseconds(123);

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.fromEpochSeconds.js

@@ -20,7 +20,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("argument must be coercible to BigInt", () => {
         expect(() => {
             Temporal.Instant.fromEpochSeconds(1.23);

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.epochMicroseconds.js

@@ -25,7 +25,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Reflect.get(Temporal.Instant.prototype, "epochMicroseconds", "foo");

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.epochMilliseconds.js

@@ -24,7 +24,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Reflect.get(Temporal.Instant.prototype, "epochMilliseconds", "foo");

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.epochNanoseconds.js

@@ -16,7 +16,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Reflect.get(Temporal.Instant.prototype, "epochNanoseconds", "foo");

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.epochSeconds.js

@@ -24,7 +24,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Reflect.get(Temporal.Instant.prototype, "epochSeconds", "foo");

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.equals.js

@@ -7,7 +7,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Temporal.Instant.prototype.equals.call("foo", 1, 2);

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.round.js

@@ -19,7 +19,7 @@ describe("correct behavior", () => {
     });
 });
 
-test("errors", () => {
+describe("errors", () => {
     test("this value must be a Temporal.Instant object", () => {
         expect(() => {
             Temporal.Instant.prototype.round.call("foo", {});

Userland/Libraries/LibJS/Tests/builtins/Temporal/Instant/Instant.prototype.valueOf.js

@@ -1,4 +1,4 @@
-test("errors", () => {
+describe("errors", () => {
     test("throws TypeError", () => {
         expect(() => {
             new Temporal.Instant(0n).valueOf();