fix #970, updated the insertion of embedded tokens for async returns

[tschaible]

Summary

fix #970 - updated the insertion of embedded tokens so it correctly handles embedded token results returning in any order

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Code style update
• Refactor
• Docs
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes

• No

• When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)

You have tested in the following browsers: (Providing a detailed version will be better.)

• Chrome
• Firefox
• Safari
• Edge
• IE

Other information:

The previous implementation incorrectly assumed that contents of embedded content would be returned in the order they were requested in the document. This created unpredictable race conditions when multiple embeds were included.

I have run into this issue with embedded markdown, and have only attempted test-cases surrounding the markdown content specifically.

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• [X ] DO NOT include files inside lib directory.

[tschaible]

When I initially opened this, 2 of the e2e test phases were marked as failed.

I was able to investigate this morning. The only errors were timeouts in the before phases of the test suite.

I ran the e2e tests locally without issue and have re-pushed the change. This time everything passed without issue.

I believe the original failure was simply an intermittent failure of the test framework setup.

I have also done some basic testing with Firefox and Safari, in addition to my additional tests in Chrome. I am not planning further updates, at this time. This change seems to effectively fix #970 in my use cases.

Please let me know if there is anything else I can do to assist in getting this merged.

[anikethsaha]

thanks for the PR and sorry for the delayed.
the tests are not so strong as of now, it bugs most of the time.
I will try to review it soon .

[anikethsaha]

cc @docsifyjs/reviewers

[Koooooo-7]

I test all the embed file cases we supported, it works fine. 💯

[anikethsaha]

@Koooooo-7 can you approved the PR if its looks fine by you. I am in the process of adding 2 required approval before merging.

[erbridge]

This is affecting us, too. Any chance it could be merged?

[anikethsaha]

Looks good, minor suggestion