Allow for no progress checkers to be configured if desired

[SteveMacenski]

@Sushant-Chavan @nourazzii can one of you review that this successfully addresses your concern?

[codecov]

Codecov Report

❌ Patch coverage is 46.66667% with 8 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
nav2_controller/src/controller_server.cpp	46.66%	8 Missing ⚠️

Files with missing lines	Coverage Δ
nav2_controller/src/controller_server.cpp	83.37% <46.66%> (-1.28%)	⬇️

... and 12 files with indirect coverage changes

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[nourazzii]

LGTM :)