[BUG] The edited inline content of fragments should be exported with content page template

• Type: Technical Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: Master
• Fix Version/s: 7.3.1 CE GA2, 7.3.2 CE GA3, 7.3.10 DXP GA1, Master
• Component/s: Page Templates
• Labels: None
• Sprint: S01E04 - Turtles Swamp, S01E05 - Flowers Rebellion, S01E06 - Trip to Canada
• Git Pull Request: https://issues.liferay.com/browse/LPS-110144

Step to reproduce:

1. Site admin > Site Builder > Page Templates > Page Templates tab
2. Add a new collection
3. Add a content page template
4. Add a Heading fragment
5. Edit the text of the Heading fragment
6. Publish
7. Export the content page template
8. Unzip
9. Open page-definition.json file

Expected Results:
The edited inline content should be in the file.

Actual Results:
The edited inline content isn't in the file.

Reproduced on:
Tomcat 9.0.17 + MySQL 5.7. Portal master GIT ID: 7f932aced830a9ecea8b1e55178226829708d762.