feat: remove align-items-center from unit title main header (#1628)

Author: Rodra

src/courseware/course/sequence/Unit/__snapshots__/index.test.jsx.snap

@@ -21,7 +21,7 @@ exports[`Unit component output snapshot: not bookmarked, do not show content 1`]
   className="unit"
 >
   <div
-    className="d-flex justify-content-between align-items-center"
+    className="d-flex justify-content-between"
   >
     <div
       className="mb-0"

src/courseware/course/sequence/Unit/index.jsx

@@ -50,7 +50,7 @@ const Unit = ({
 
   return (
     <div className="unit">
-      <div className="d-flex justify-content-between align-items-center">
+      <div className="d-flex justify-content-between">
         <div className="mb-0">
           <h3 className="h3">{unit.title}</h3>
           <UnitTitleSlot courseId={courseId} unitId={id} unitTitle={unit.title} />