fix(db): fix leveldb manifest rewrite

[halibobo1205]

What does this PR do?

1. stop generate engine.properties if it is not a db path

Why are these changes required?

Due to #4614, database/checkpoint is added, but it is not a db path.

This PR has been tested by:

• Unit Tests
• Manual Testing

Follow up

Extra details

[tomatoishealthy]

LGTM

[codecov-commenter]

Codecov Report

Merging #4655 (6dc92b4) into release_v4.6.0 (e09095c) will increase coverage by 0.03%.
The diff coverage is n/a.

@@                 Coverage Diff                  @@
##             release_v4.6.0    #4655      +/-   ##
====================================================
+ Coverage             54.45%   54.48%   +0.03%     
- Complexity             7977     7985       +8     
====================================================
  Files                   831      831              
  Lines                 47120    47120              
  Branches               5103     5103              
====================================================
+ Hits                  25658    25673      +15     
+ Misses                19425    19411      -14     
+ Partials               2037     2036       -1     

Impacted Files	Coverage Δ
...tron/common/overlay/discover/node/NodeManager.java	76.97% <0.00%> (-0.66%)	⬇️
.../src/main/java/org/tron/core/ChainBaseManager.java	92.30% <0.00%> (+1.39%)	⬆️
...rc/main/java/org/tron/consensus/dpos/DposTask.java	91.93% <0.00%> (+3.22%)	⬆️
...ain/java/org/tron/common/utils/ForkController.java	79.80% <0.00%> (+5.76%)	⬆️
...rc/main/java/org/tron/core/db/BlockIndexStore.java	58.33% <0.00%> (+8.33%)	⬆️
.../java/org/tron/core/consensus/BlockHandleImpl.java	80.00% <0.00%> (+15.00%)	⬆️
...org/tron/core/exception/ItemNotFoundException.java	66.66% <0.00%> (+33.33%)	⬆️

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