fix: Text font gets changed on adding Rich text editor widget onto canvas (#22939)

Fixes #22937

> if no issue exists, please create an issue and ask the maintainers
about this first

Media
> A video or a GIF is preferred. when using Loom, don’t embed because it
looks like it’s a GIF. instead, just link to the video

## Type of change

> Please delete options that are not relevant.

- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- Chore (housekeeping or task changes that don't impact user perception)
- This change requires a documentation update

## How Has This Been Tested?
> Please describe the tests that you ran to verify your changes. Provide
instructions, so we can reproduce.
> Please also list any relevant details for your test configuration.
> Delete anything that is not important

- Manual
- Jest
- Cypress

### Test Plan
> Add Testsmith test cases links that relate to this PR

### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)

## Checklist:
### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag

### QA activity:
- [ ] Test plan has been approved by relevant developers
- [ ] Test plan has been peer reviewed by QA
- [ ] Cypress test cases have been added and approved by either SDET or
manual QA
- [ ] Organized project review call with relevant stakeholders after
Round 1/2 of QA
- [ ] Added Test Plan Approved label after reveiwing all Cypress test

(cherry picked from commit 90b7f98f1e)

app/client/src/widgets/RichTextEditorWidget/component/index.tsx

@@ -22,7 +22,6 @@ import "tinymce/plugins/emoticons/js/emojis";
 import "tinymce/plugins/print";
 import "tinymce/themes/silver";
 import "tinymce/skins/ui/oxide/skin.min.css";
-import "tinymce/skins/ui/oxide/content.min.css";
 import React, { useRef, useCallback, useEffect, useState } from "react";
 import styled from "styled-components";
 import { Editor } from "@tinymce/tinymce-react";