Problem Statement/Rationale{}

Rationale:

• no easy way to get the count of restored documents without actually modifying the database
• behavior of --dryRun should match the non-dry-run behavior as close as possible (but not modify the database, of course)

Steps to Reproduce

• run mongorestore --dryRun with any dump
• it shows 0 out of 0 documents restored
• run it withou --dryRun
• it restores more than 0 documents

Expected Results

the --dryRun document count matching the real one

Actual Results

the --dryRun document count is always zero

Additional Notes

$ mongorestore --version
mongorestore version: 100.9.4
git version: ce6af0fefca324ad5d9cb689d335130f48c99699
Go version: go1.20.12
   os: linux
   arch: amd64
   compiler: gc