LibJS: Use TimeZoneMethods in GetOffsetNanosecondsFor

Update to the latest version of the spec which was refactored to use
time zone methods record. This requires updating a whole bunch of
callers to pass through a record too.

This also ends up improving exceptions on a missing
getOffsetNanosecondsFor method.

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.getISOFields.js

@@ -51,6 +51,6 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.getISOFields();
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 });

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.offset.js

@@ -23,6 +23,6 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.offset;
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 });

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.offsetNanoseconds.js

@@ -23,6 +23,6 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.offsetNanoseconds;
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 });

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toJSON.js

@@ -22,6 +22,6 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.toJSON();
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 });

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toLocaleString.js

@@ -22,6 +22,6 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.toLocaleString();
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 });

Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toString.js

@@ -156,7 +156,7 @@ describe("errors", () => {
         const zonedDateTime = new Temporal.ZonedDateTime(0n, {});
         expect(() => {
             zonedDateTime.toString();
-        }).toThrowWithMessage(TypeError, "null is not a function");
+        }).toThrowWithMessage(TypeError, "getOffsetNanosecondsFor is undefined");
     });
 
     test("calendarName option must be one of 'auto', 'always', 'never', 'critical'", () => {