fix: files from basePath should be remoteUrl:false

[b6pzeusbc54tvhw5jgpyw8pwz2x6gs]

Summary

When using the basePath as an absolute url including the domain and the domain of index.html and the domain of basePath are different, Currently, files fetched from basePath are treated as isExternal: true , and I think this behavior is a bug.

basePath is a value that can be entered only with the authority of the document site administrator, and the basePath server can also be considered owned by the administrator, so the isRemoteUrl value should be false.

What kind of change does this PR introduce?

Bugfix

For any code change,

• Related documentation has been updated if needed
• Related tests have been updated or tests have been added

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

• Yes
• No

If yes, please describe the impact and migration path for existing applications:

Related issue, if any:

#1659

Tested in the following browsers:

• Chrome
• Firefox
• Safari
• Edge
• IE

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