[BUGFIX][BACKPORT] Impose a plain format on padded concat output

[PawelGlomski-Intel]

Description

Backport of #19735

Right now, oneDNN may choose a blocked format for the output of concat, in cases that may require additional padding (thus more memory). In (de)convolution we make sure to only select a primitive_desc which has the expected (from tensor size) memory size requirements, so the same has to be done in this case.

Unlike convolution's, concat's primitive_desc does not support iteration over multiple implementations, so here I manually impose a plain format when oneDNN would choose a blocked one with padding.

Resolves #19586

[mxnet-bot]

Hey @PawelGlomski-Intel , Thanks for submitting the PR
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[PawelGlomski-Intel]

@mxnet-bot run ci [all]

[PawelGlomski-Intel]

@mxnet-bot run ci [windows-cpu]

[mxnet-bot]

Jenkins CI successfully triggered : [windows-cpu]

[PawelGlomski-Intel]

@mxnet-bot run ci [windows-cpu]

[PawelGlomski-Intel]

@mxnet-bot run ci [windows-cpu]

[PawelGlomski-Intel]

@mxnet-bot run ci [windows-gpu]

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Jenkins CI successfully triggered : [windows-gpu]

[PawelGlomski-Intel]

@szha I believe this can be merged (adding oneDNN support for npx operators won't be included in this PR)

[szha]

@PawelGlomski-Intel thanks!