Fix plotting of parameters from ensembles made with manual update

[JHolba]

Issue
Resolves #5404

Approach
Sync storage after analysis step

Pre review checklist

• Added appropriate release note label
• PR title captures the intent of the changes, and is fitting for release notes.
• Commit history is consistent and clean, in line with the contribution guidelines.
• Updated documentation
• Ensured new behaviour is tested

Adding labels helps the maintainers when writing release notes. This is the list of release note labels.

[JHolba]

Plotter did not manage to show anything due to missing state-map.json. This caused storage to report all realisations as not initialised.

[pinkwah]

lgtm

[codecov-commenter]

Codecov Report

Merging #5700 (cc50366) into main (9e41444) will increase coverage by 37.75%.
Report is 23 commits behind head on main.
The diff coverage is 100.00%.

@@             Coverage Diff             @@
##             main    #5700       +/-   ##
===========================================
+ Coverage   42.23%   79.98%   +37.75%     
===========================================
  Files          25      362      +337     
  Lines        3083    22515    +19432     
  Branches      989      989               
===========================================
+ Hits         1302    18008    +16706     
- Misses       1513     4239     +2726     
  Partials      268      268               

Files Changed	Coverage Δ
src/ert/analysis/_es_update.py	88.21% <100.00%> (ø)

... and 336 files with indirect coverage changes

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