[Bug]: Dupicate fuse processes/issue with existing volume mount process detection

[wdec]

Describe the bug
Existing code fails to detect in some cases the presence of an existing fuse mount process, leading to the creation of multiple fuse processes. This is a concurrency issue.
Fix has been identified and is in progress

To Reproduce
Steps to reproduce the behavior:

1. Create mount for volume X on pod1
2. Create mount for volume X on pod2
3. If pod1 and pod2 are on the same node, and created in quick succession, multiple fuse processes for volume X are created

Expected behavior
Additional fuse processes for existing mounts shouldn't be created.

Actual behavior
A clear and concise description of what actually happened.

Environment:
kadalu 1.1

Screenshots or Logs
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Additional context
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