fix(frontend/durationpicker-day): improve parsing

before hours were required, now things such as `:15` for 15min or `30` for 30min are possible

frontend/app/components/durationpicker-day.js

@@ -15,7 +15,7 @@ export default class DurationpickerDayComponent extends DurationpickerComponent
   }
 
   get pattern() {
-    return "^(?:[01]?\\d|2[0-3]):?(?:00|15|30|45)?$";
+    return "^(?:[01]?\\d|2[0-3])?:?(?:00|15|30|45)?$";
   }
 
   @action

frontend/app/utils/parse-daytime.js

@@ -4,7 +4,7 @@
  * @public
  */
 
-const DAY_TIME_REGEX = /^(?<hours>[01]?\d|2[0-3]):?(?<minutes>00|15|30|45)?$/;
+const DAY_TIME_REGEX = /^(?<hours>[01]?\d|2[0-3])?:?(?<minutes>00|15|30|45)?$/;
 
 /**
  * Converts a django duration string to a moment duration
@@ -23,5 +23,5 @@ export default function parseDayTime(str) {
   if (!matches) return null;
   const { hours, minutes } = matches.groups;
 
-  return [parseInt(hours), parseInt(minutes ?? "0")];
+  return [parseInt(hours ?? "0"), parseInt(minutes ?? "0")];
 }

frontend/tests/unit/utils/parse-daytime-test.js

@@ -14,6 +14,16 @@ module("Unit | Utility | parse day time", function () {
     assert.deepEqual([2, 0], result);
   });
 
+  test("single numbers over 23 will be minutes if valid", function (assert) {
+    assert.deepEqual([0, 30], parseDayTime("30"));
+    assert.deepEqual([0, 45], parseDayTime("45"));
+  });
+
+  test("anything after : will be minutes", function (assert) {
+    assert.deepEqual([0, 15], parseDayTime(":15"));
+    assert.deepEqual([0, 30], parseDayTime(":30"));
+  });
+
   test("works without :", function (assert) {
     const result = parseDayTime("230");