Use assert.equal instead of htmlEqual in case of preserveWhitespace.

Since htmlEqual uses normalizeHtml that removes whitespace.

test/server-side-rendering/index.js

@@ -76,7 +76,11 @@ describe("ssr", () => {
 				if (css.code) fs.writeFileSync(`${dir}/_actual.css`, css.code);
 
 				try {
-					assert.htmlEqual(html, expectedHtml);
+					if (compileOptions.preserveWhitespace) {
+						assert.equal(html, expectedHtml);
+					} else {
+						assert.htmlEqual(html, expectedHtml);
+					}
 				} catch (error) {
 					if (shouldUpdateExpected()) {
 						fs.writeFileSync(`${dir}/_expected.html`, html);

test/server-side-rendering/samples/preserve-whitespace/main.svelte

@@ -4,8 +4,9 @@
         <p> Some text </p>
     </div>
     <select>
-        <option value="1">1</option>
-        <option value="2">2</option>
+{#each [1, 2] as value}
+        <option>{value}</option>
+{/each}
     </select>
 </div>