fix(e2e): only run select tests (session reload) if option count is 2 or more

refs #585

e2e/load-save-session.e2e-spec.ts

@@ -183,7 +183,7 @@ describe("ngHyd − save and load sessions", () => {
                     const options = await calcPage.getMatselectOptionsText(sel);
                     const optionCount = options.length;
 
-                    if (optionCount > 0) {
+                    if (optionCount > 1) {
                         // index of current selected option
                         const optTxt = await calcPage.getMatselectCurrentOptionText(sel);
                         const ind = options.indexOf(optTxt);