Properties dialog fail to show certain properties when using system proxy

[JasonYeMSFT]

Preflight Checklist

• [X] I have installed the latest version of Storage Explorer.
• [X] I have checked existing resources, including the troubleshooting guide and the release notes.
• [X] I have searched for similar issues.

Storage Explorer Version

1.25.0

Regression From

1.23.1

Architecture

i86

Storage Explorer Build Number

No response

Platform

All

OS Version

No response

Bug Description

Enable "use system proxy" and open the properties dialog of a blob. In the dialog, some properties will be missing (e.g. ContentLength, LastModified, etc.). Besides, editable properties such as ContentType won't show their values. It is still possible to enter new values and set them.

Steps to Reproduce

Same as bug description

Actual Experience

The values will be displayed as blank no matter what the actual values are. Entering new values and save will still be able to set the new property values.

Expected Experience

No response

Additional Context

The cause of the bug is that when using system proxy, we preserve the casing of headers' key. However, the blob SDK uses a header map with only lowercase keys. As a result, all the headers whose original keys have uppercase letters won't be parsed properly into the result.

[MRayermannMSFT]

Opened a bug against Azure SDK to try and hash out a solution: https://github.com/Azure/azure-sdk-for-js/issues/22881

[MRayermannMSFT]

Merged a temp workaround that filters our header name casing respecting to just headers starting with x-ms-meta.

[v-xianya]

@MRayermannMSFT Verified this issue on the build main 20220817.4.

1. This issue doesn't reproduce for blobs.
2. This issue reproduces for files.

[v-xianya]

Verified this issue on the build main/20220902.1. Fixed.