fix(meta): fix pick a single level and repeated compact task (#8141)

[lmatz]

Merge fixes into v0.1.17-rc

[codecov]

Codecov Report

Merging #8187 (39410f5) into v0.1.17-rc (6f5c29e) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@              Coverage Diff               @@
##           v0.1.17-rc    #8187      +/-   ##
==============================================
+ Coverage       71.36%   71.37%   +0.01%     
==============================================
  Files            1122     1122              
  Lines          181204   181234      +30     
==============================================
+ Hits           129315   129355      +40     
+ Misses          51889    51879      -10     

Flag	Coverage Δ
rust	71.37% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...ummock/compaction/picker/tier_compaction_picker.rs	99.71% <100.00%> (+1.25%)	⬆️
src/source/src/row_id.rs	90.90% <0.00%> (-1.14%)	⬇️
src/object_store/src/object/mod.rs	50.31% <0.00%> (-0.22%)	⬇️
src/object_store/src/object/mem.rs	86.87% <0.00%> (ø)
src/storage/src/hummock/sstable_store.rs	64.77% <0.00%> (ø)
src/stream/src/executor/aggregation/minput.rs	96.35% <0.00%> (+0.10%)	⬆️
...ck_sdk/src/compaction_group/hummock_version_ext.rs	87.60% <0.00%> (+0.16%)	⬆️
src/storage/src/hummock/compactor/mod.rs	80.88% <0.00%> (+0.19%)	⬆️
src/common/src/types/ordered_float.rs	31.06% <0.00%> (+0.19%)	⬆️
src/storage/src/hummock/compactor/iterator.rs	96.68% <0.00%> (+0.27%)	⬆️
... and 3 more

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