fix(@angular-devkit/build-angular): re-order ES5 polyfills in karma H…

[alan-agius4]

…TMLs

Similar to the index HTML page (

angular-cli/tests/legacy-cli/e2e/tests/misc/support-ie.ts

Lines 30 to 37 in 6ec0991

	await expectFileToMatch('dist/test-project/index.html', oneLineTrim`
	<script src="runtime.js"></script>
	<script src="polyfills-es5.js" nomodule></script>
	<script src="polyfills.js"></script>
	<script src="styles.js"></script>
	<script src="vendor.js"></script>
	<script src="main.js"></script>
	`);

) ES5 polyfills should be loaded prior to the other polyfills. This is because other polyfills such as zone.js require these for example Symbol and Object.isFrozen

Fixes #14618

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