clean clone for src build

[dtrawins]

🛠 Summary

Build OV components always from clean repo to avoid CI issues with previous state.

🧪 Checklist

• Unit tests added.
• The documentation updated.
• Change follows security best practices.
  ``

[Copilot]

Pull request overview

This PR updates the Windows dependency install script to force a clean re-clone of OpenVINO-related source repositories when building OpenVINO from source, rather than reusing any existing local checkouts under %BAZEL_SHORT_PATH%.

Changes:

• Always remove and re-clone %BAZEL_SHORT_PATH%\openvino_src before building OpenVINO from source.
• Always remove and re-clone %BAZEL_SHORT_PATH%\openvino_tokenizers_src before building/installing OpenVINO Tokenizers.
• Always remove and re-clone %BAZEL_SHORT_PATH%\openvino_genai_src before building/installing OpenVINO GenAI.

Suppressed comments (2)

windows_install_build_dependencies.bat:274

• This Tokenizers block deletes and reclones the repo but does not check errorlevel after rmdir or git clone. If either fails, the following cd/git operations may execute from the wrong directory and only fail later, which is hard to diagnose.

IF /I EXIST %BAZEL_SHORT_PATH%\openvino_tokenizers_src (
    rmdir /S /Q %BAZEL_SHORT_PATH%\openvino_tokenizers_src
)

git clone https://github.com/%OV_TOKENIZERS_ORG%/openvino_tokenizers.git %BAZEL_SHORT_PATH%\openvino_tokenizers_src

windows_install_build_dependencies.bat:298

• This GenAI block deletes and reclones the repo but does not check errorlevel after rmdir or git clone. If those steps fail, later commands (cd, git fetch/checkout/pull) can run from an unexpected working directory before failing, reducing script reliability.

IF /I EXIST %BAZEL_SHORT_PATH%\openvino_genai_src (
    rmdir /S /Q %BAZEL_SHORT_PATH%\openvino_genai_src
)

git clone https://github.com/%OV_GENAI_ORG%/openvino.genai.git %BAZEL_SHORT_PATH%\openvino_genai_src

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