fix: vault double stake bug

[oren-lava]

Description

Closes: #XXXX

Make sure the same vault can't stake twice with different operator address

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[github-actions]

Test Results

2 519 tests  +1   2 518 ✅ +1   26m 12s ⏱️ -30s
  124 suites ±0       1 💤 ±0 
    7 files   ±0       0 ❌ ±0 

Results for commit 8992166. ± Comparison against base commit 2c37ea3.

♻️ This comment has been updated with latest results.

[Yaroms]

increment the module version so the upgrade will apply