SplitConcatPairToInterpolate inserts Interpolate when input is 2D

[vgavrilo]

Description:

The MO incorrectly replaces Split+Concat with Interpolate for the STN model. If the transformation is disabled then the IR is generated properly and it produces correct inference results on CPU

Ticket: CVS-32079

Code:

• Comments
• Code style (PEP8)
• Transformation generates reshape-able IR: Yes
• Transformation preserves node names: N/A because there is no new transformation

Validation:

• Unit tests
• Framework layer tests: N/A because no new layers were enabled in MO
• Transformation tests: N/A because there is no new transformations
• e2e model test: N/A because there is no new model
• MO IR Reader tests: N/A because there is no new model

Documentation:

• Supported frameworks layers list: N/A because no new layers were enabled in MO
• Supported public models list: N/A because there is no new public model
• New operations specification: N/A because no new operations were enabled in MO
• Guide on how to convert the public model: N/A because there is no new public model
• User guide update: N/A because there is no need to update common user guide

Other:

• Sample/Demo application to infer the model: N/A since the model can be executed using existing classification sample

[jane-intel]

General question:
What was wrong? Ticket is not descriptive enough. We had troubles because Interpolate doesn't work for less than 4D cases?

[vgavrilo]

As far as I understand, the reason was that IE supports only 4D or 5D tensors as inputs of Interpolate. Hence, for example, 2D input tensors of Interoolate are not supported.

[jane-intel]

Please rebase -- closed-ci shows build failures.