fix(i): Server dump fails

[nasdf]

Relevant issue(s)

Resolves #2373

Description

This PR fixes an issue that caused the server dump command to use the in memory store incorrectly and fail.

Tasks

• I made sure the code is well commented, particularly hard-to-understand areas.
• I made sure the repository-held documentation is changed accordingly.
• I made sure the pull request title adheres to the conventional commit style (the subset used in the project can be found in tools/configs/chglog/config.yml).
• I made sure to discuss its limitations such as threats to validity, vulnerability to mistake and misuse, robustness to invalidation of assumptions, resource requirements, ...

How has this been tested?

manually defradb server-dump

Specify the platform(s) on which this was tested:

• MacOS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.00%. Comparing base (a6e886e) to head (cd12325).

❗ Current head cd12325 differs from pull request most recent head 4d96ad1. Consider uploading reports for the commit 4d96ad1 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2374      +/-   ##
===========================================
- Coverage    75.07%   75.00%   -0.07%     
===========================================
  Files          266      266              
  Lines        25855    25854       -1     
===========================================
- Hits         19409    19391      -18     
- Misses        5141     5156      +15     
- Partials      1305     1307       +2     

Flag	Coverage Δ
all-tests	75.00% <ø> (-0.07%)	⬇️

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Files	Coverage Δ
cli/server_dump.go	19.23% <ø> (+0.71%)	⬆️

... and 8 files with indirect coverage changes

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[fredcarle]

LGTM

[shahzadlone]

LGTM. assuming was tested through cli :P