fix: Safe Handling of "more_body" in ASGI Responses

[cemrehancavdar]

Safe Access to "More Body"

I've encountered an issue in sqladmin-litestar-plugin where some ASGI frameworks (such as Starlette) do not include "more_body": false in the "http.response.body" event. According to the ASGI specification, this key should be set to False when there is no additional body content. Litestar expects "more_body" to be explicitly defined, but others might not.

This leads to failures when an ASGI framework mounted on Litestar throws error for the "more_body" key in "http.response.body".

I have changed it to message.get('more_body')as @cofin suggests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.42%. Comparing base (dcae3b3) to head (24ef67a).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3845   +/-   ##
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  Coverage   98.42%   98.42%           
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  Files         333      333           
  Lines       15348    15348           
  Branches     1694     1694           
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  Hits        15107    15107           
  Misses        111      111           
  Partials      130      130           

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[github-actions]

Documentation preview will be available shortly at https://litestar-org.github.io/litestar-docs-preview/3845