[develop] XAI: Return saliency maps for Mask RCNN IR async infer

[GalyaZalesskaya]

Summary

Fix the issue CVS-116159
Add for async inference calculating saliency maps from predictions (Mask RCNN IR)

How to test

Checklist

• I have added unit tests to cover my changes.​
• I have added integration tests to cover my changes.​
• I have added e2e tests for validation.
• I have added the description of my changes into CHANGELOG in my target branch (e.g., CHANGELOG in develop).​
• I have updated the documentation in my target branch accordingly (e.g., documentation in develop).
• I have linked related issues.

License

• I submit my code changes under the same Apache License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below).

# Copyright (C) 2023 Intel Corporation
# SPDX-License-Identifier: Apache-2.0

[sungmanc]

Since the exposure level of the ticket is E2, I think we need to apply this remedy to 1.4.1 or another RC. Please check this.

[goodsong81]

@GalyaZalesskaya Could you replicate this fix to releases/1.4.0, too? We decided to use this branch for on-going fixes like 1.4.1+ for Geti1.8.

[GalyaZalesskaya]

@sungmanc @goodsong81 Thank you for the comment, I've created the same PR for the release branch: #2395

[goodsong81]

Thank you, LGTM!