fix: use keyset pagination list identities

[alnr]

https://github.com/ory-corp/cloud/issues/5412

I'd consider this a MVP/stop-gap solution to the immediate problem. The code in ListIdentities needs an overhaul. Since removal of the query builder in #3526, the code is constructed via printf and hard to read 😞.

Also, the assortment of pagination packages in ory/x are wholly confusing 😢

Needs ory/x#729

[codecov]

Codecov Report

Merging #3565 (32b6492) into master (9eff0f3) will increase coverage by 0.01%.
Report is 4 commits behind head on master.
The diff coverage is 85.26%.

❗ Current head 32b6492 differs from pull request most recent head f265aad. Consider uploading reports for the commit f265aad to get more accurate results

@@            Coverage Diff             @@
##           master    #3565      +/-   ##
==========================================
+ Coverage   78.10%   78.12%   +0.01%     
==========================================
  Files         341      341              
  Lines       22820    22882      +62     
==========================================
+ Hits        17824    17876      +52     
- Misses       3654     3661       +7     
- Partials     1342     1345       +3     

Files	Coverage Δ
driver/registry.go	34.21% <100.00%> (ø)
driver/registry_default.go	84.59% <100.00%> (ø)
identity/identity.go	88.18% <100.00%> (+0.21%)	⬆️
identity/manager.go	74.42% <ø> (-0.69%)	⬇️
identity/test/pool.go	99.56% <100.00%> (+<0.01%)	⬆️
selfservice/flow/login/hook.go	87.82% <100.00%> (ø)
x/http_secure_redirect.go	87.36% <100.00%> (ø)
persistence/sql/persister.go	72.81% <91.66%> (ø)
selfservice/flow/registration/hook.go	72.84% <75.00%> (ø)
x/pagination.go	76.00% <71.42%> (-24.00%)	⬇️
... and 2 more

... and 2 files with indirect coverage changes

[aeneasr]

Two things regarding tests

[zepatrik]

Nice, just some minor details apart from what the others already pointed out 👍