fix: update is-browser.ts to account undefined navigator (#1868)

* Update is-browser.ts

Fixes electron 12.2.3, which doesn't have navigator defined

6a03d29#commitcomment-142114121

* Making recommended changes #1868 (review)

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Co-authored-by: Cody Moniz <cody.moniz@gmail.com>

src/lib/is-browser.ts

@@ -4,7 +4,8 @@ const isStandardBrowserEnv = () => {
 		// Is the process an electron application
 		// check if we are in electron `renderer`
 		const electronRenderCheck =
-			navigator?.userAgent?.toLowerCase().indexOf(' electron/') > -1
+			typeof navigator !== 'undefined' &&
+			navigator.userAgent?.toLowerCase().indexOf(' electron/') > -1
 		if (electronRenderCheck && process?.versions) {
 			const electronMainCheck = Object.prototype.hasOwnProperty.call(
 				process.versions,