Add computed property destructuring tests for each blocks

test/runtime/samples/each-block-destructured-array-computed-props/_config.js

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+export default {
+	props: {
+		array: [
+      [1, 2, 3, 4, 5],
+      [6, 7, 8],
+      [9, 10, 11, 12],
+      [13, 14, 15, 16, 17, 18, 19, 20, 21, 22]
+		]
+	},
+
+	html: `
+		<p>First: 1, Half: 3, Last: 5, Length: 5</p>
+		<p>First: 6, Half: 7, Last: 8, Length: 3</p>
+		<p>First: 9, Half: 11, Last: 12, Length: 4</p>
+		<p>First: 13, Half: 18, Last: 22, Length: 10</p>
+	`,
+
+	test({ assert, component, target }) {
+		component.array = [[23, 24, 25, 26, 27, 28, 29]];
+		assert.htmlEqual( target.innerHTML, `
+			<p>First: 23, Half: 26, Last: 29, Length: 7</p>
+		`);
+	}
+};

test/runtime/samples/each-block-destructured-array-computed-props/main.svelte

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+<script>
+	export let array;
+</script>
+
+{#each array as { 0: first, length, [length - 1]: last, [Math.floor(length / 2)]: half }}
+	<p>First: {first}, Half: {half}, Last: {last}, Length: {length}</p>
+{/each}

test/runtime/samples/each-block-destructured-object-computed-props/_config.js

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+export default {
+	props: {
+    firstString: 'cats',
+    secondString: 'dogs',
+		objectsArray: [
+      { dogs: 'woof', cats: 'meow', stac: 'stack', DOGS: 'WOOF' },
+      { dogs: 'A German sheppard', cats: 'A tailless cat', stac: 'A jenga tower', DOGS: 'A GERMAN SHEPPARD' },
+      { dogs: 'dogs', cats: 'cats', stac: 'stac', DOGS: 'DOGS' }
+		]
+	},
+
+	html: `
+		<p>cats: meow</p>
+		<p>dogs: woof</p>
+		<p>stac: stack</p>
+		<p>DOGS: WOOF</p> 
+		<p>cats: A tailless cat</p>
+		<p>dogs: A German sheppard</p>
+		<p>stac: A jenga tower</p>
+		<p>DOGS: A GERMAN SHEPPARD</p> 
+		<p>cats: cats</p>
+		<p>dogs: dogs</p>
+		<p>stac: stac</p>
+		<p>DOGS: DOGS</p> 
+	`
+};

test/runtime/samples/each-block-destructured-object-computed-props/main.svelte

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+<script>
+	export let objectsArray;
+  export let firstString;
+  export let secondString;
+</script>
+
+{#each objectsArray as { [firstString]: firstProp, [secondString]: secondProp, [firstString.split('').reverse().join('')]: reverseFirst, [secondString.toUpperCase()]: upperSecond } }
+	<p>{firstString}: {firstProp}</p>
+  <p>{secondString}: {secondProp}</p>
+	<p>{firstString.split('').reverse().join('')}: {reverseFirst}</p>
+	<p>{secondString.toUpperCase()}: {upperSecond}</p>
+{/each}