fix(utils): Remove WINDOW from utils

[timfish]

Fixes #6016

This issue is caused by the fact that Window ends up in the utils type definitions.

This PR:

• Removes WINDOW from utils
• In utils, it's usage is replaced with the following at the top of the appropriate files:

  // eslint-disable-next-line deprecation/deprecation. 
  const WINDOW = getGlobalObject<Window>();

• Adds WINDOW to:
  • @sentry/browser where it is exported for use elsewhere
  • @sentry/tracing/browser - Can be removed once tracing is split into browser/node code
  • The Offline and ReportingObserver integrations since they don't have any dependencies other than utils
    • These could probably just use window since they're not used outside the browser
• All downstream SDKs then import WINDOW from @sentry/browser or @sentry/react

[AbhiPrasad]

I think this still causes issues right? Since Window is at the top level.

[timfish]

I don't think the user reported issue has anything to do with top-level Window usage since the error directly references browser.d.ts:

node_modules/@sentry/utils/types/browser.d.ts:4:69 - error TS2304: Cannot find name 'Window'.

In master there is Window in browser.d.ts:

export declare const WINDOW: InternalGlobal & Window;
export declare function htmlTreeAsString(elem: unknown, keyAttrs?: string[]): string;
export declare function getLocationHref(): string;
export declare function getDomElement<E = any>(selector: string): E | null;

After this PR changes, browser.d.ts no longer has this:

export declare function htmlTreeAsString(elem: unknown, keyAttrs?: string[]): string;
export declare function getLocationHref(): string;
export declare function getDomElement<E = any>(selector: string): E | null;

And in the outputted JavaScript there are no generics or types so Window is gone too:

// eslint-disable-next-line deprecation/deprecation
const WINDOW = getGlobalObject();

[AbhiPrasad]

Ah of course, it's not exported!