fix(res): unescape new line symbol in string resources (#1030)

jadx-core/src/main/java/jadx/core/utils/StringUtils.java

@@ -217,9 +217,9 @@ public class StringUtils {
 	}
 
 	private static void commonEscapeAndAppend(StringBuilder sb, char c) {
-		String replace = escapeXmlChar(c);
+		String replace = escapeWhiteSpaceChar(c);
 		if (replace == null) {
-			replace = escapeWhiteSpaceChar(c);
+			replace = escapeXmlChar(c);
 		}
 		if (replace != null) {
 			sb.append(replace);

jadx-core/src/test/java/jadx/tests/functional/StringUtilsTest.java

@@ -51,4 +51,15 @@ class StringUtilsTest {
 	private void checkCharUnescape(char input, String result) {
 		assertThat(stringUtils.unescapeChar(input), is('\'' + result + '\''));
 	}
+
+	@Test
+	public void testResStrValueEscape() {
+		checkResStrValueEscape("line\nnew line", "line\\nnew line");
+		checkResStrValueEscape("can't", "can\\'t");
+		checkResStrValueEscape("quote\"end", "quote\\\"end");
+	}
+
+	private void checkResStrValueEscape(String input, String result) {
+		assertThat(StringUtils.escapeResStrValue(input), is(result));
+	}
 }