chore: Auto capitalize the name field while sending the canned response/variables (#6758)

* capitalize name before sending the message

* Fix specs

* Code cleanups

app/javascript/dashboard/helper/specs/messageHelper.spec.js

@@ -4,6 +4,7 @@ import {
   getLastName,
   getMessageVariables,
   getUndefinedVariablesInMessage,
+  capitalizeName,
 } from '../messageHelper';
 
 const variables = {
@@ -136,3 +137,18 @@ describe('#getUndefinedVariablesInMessage', () => {
     );
   });
 });
+
+describe('#capitalizeName', () => {
+  it('Capitalize name if name is passed', () => {
+    const string = 'hello world';
+    expect(capitalizeName(string)).toBe('Hello world');
+  });
+  it('returns empty string if the string is empty', () => {
+    const string = '';
+    expect(capitalizeName(string)).toBe('');
+  });
+  it('Capitalize first name if full name is passed', () => {
+    const string = 'john Doe';
+    expect(capitalizeName(string)).toBe('John Doe');
+  });
+});