[http] by default allow decode of post object

[linev]

Option can be used to prevent complex object decoding when exe.json request is executed.

It was default behaviour before.

Follow up for #22186

[github-actions]

Test Results

    22 files      22 suites   3d 11h 23m 28s ⏱️
 3 854 tests  3 854 ✅ 0 💤 0 ❌
76 138 runs  76 138 ✅ 0 💤 0 ❌

Results for commit 429e998.

[jblomer]

Could you remind me: why do we need to change (back) the default? Did anything break with the changed behaviour?

[linev]

Could you remind me: why do we need to change (back) the default? Did anything break with the changed behaviour?

This is new flag which was introduced with #22186
But if changes default behavior of THttpServer.
Therefore I want to switch this option true.
As we discuss - I/O for arbitrary class is not an issue when host system was not compromised before

[linev]

/backport to 6.40, 6.38, 6.36, 6.32, 6.30, 6.28, 6.26

[root-project-bot]

Preparing to backport PR #22487 to branches 6.40, 6.38, 6.36, 6.32, 6.30, 6.28 and 6.26 requested by linev

[root-project-bot]

This PR has been backported to

• Branch 6.40:#[6.40] [http] by default allow decode of post object #22526
• Branch 6.38:#[6.38] [http] by default allow decode of post object #22527
• Branch 6.36:#[6.36] [http] by default allow decode of post object #22528
• Branch 6.32:#[6.32] [http] by default allow decode of post object #22530
• Branch 6.30:#[6.30] [http] by default allow decode of post object #22531
• Branch 6.28:#[6.28] [http] by default allow decode of post object #22532
• Branch 6.26:#[6.26] [http] by default allow decode of post object #22533