fix(backend): set default value to true for ForcePathStyle

[zazulam]

Description of your changes:
Addresses #11280, adds back the default value of true for ForcePathStyle.

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[google-oss-prow]

Hi @zazulam. Thanks for your PR.

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[HumairAK]

tested and works, thanks @zazulam for a quick turnaround on this!

/lgtm
/approve

(after/before)

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HumairAK

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