chore: remove version in manifest json file name

[alanlong9278]

Description

use version to generate manifest json file name

Task Item

closes #8352

Screenshots

[cypress]

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Test summary

16 • 0 • 1 • 0 • 1

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Run details

Project	Composer
Status	Passed
Commit	31436a8
Started	Jul 20, 2021 7:55 AM
Ended	Jul 20, 2021 8:00 AM
Duration	05:22 💡
OS	Linux Ubuntu - 20.04
Browser	Electron 89

View run in Cypress Dashboard ➡️

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Flakiness

	cypress/integration/DesignPage.spec.ts		1
1	breadcrumb > can create different kinds of triggers

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[coveralls]

Coverage increased (+0.02%) to 55.817% when pulling 2d37171 on julong/manifestUrlName into 466c8b2 on main.

[luhan2017]

Let's hold on this change, this will generate a list of manifest files locally for each version, it is tricky, if we want to show all to the user, we need to make the version a number sortable, and this may cause user experiences change.

I have another proposal in the issue link. I think we can simplify this by

• disable the manfiest selection and always use schema 2.2 to generate manfiest file.
• just use "manifest.json" as the name, and always keep one manifest locally. (all the dialog assets doesn't have a version concept, it is not valid to only keep the manifest versions)