[v1.x][Bugfix] Fix take gradient

[waytrue17]

Description

Fix #19817. Reset value of grad_in when axis != 0. The fix was tested by the script described in #19817

Checklist

Essentials

• PR's title starts with a category (e.g. [BUGFIX], [MODEL], [TUTORIAL], [FEATURE], [DOC], etc)
• Changes are complete (i.e. I finished coding on this PR)
• All changes have test coverage
• Code is well-documented

Changes

• Feature1, tests, (and when applicable, API doc)
• Feature2, tests, (and when applicable, API doc)

Comments

• If this change is a backward incompatible change, why must this change be made.
• Interesting edge cases to note here

[mxnet-bot]

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[waytrue17]

Can you please review @Zha0q1 @szha

[szha]

Thanks @waytrue17. Could you add a test for the bug? Is this patch needed for master?

[waytrue17]

Thanks @waytrue17. Could you add a test for the bug? Is this patch needed for master?

Test added. Master also needs this. I can port it after this pr merged

[waytrue17]

@mxnet-bot run ci [centos-cpu]

[szha]

@waytrue17 thanks for the fix