CLI: Fix support for -c (--config) shortcut

[medikoo]

Regression was accidentally introduced with #10332.

Back in v2, the resolution of -c/--config was hardcoded into lib/cli/resolve-input.js. While in v3 it was generalized, and co-relies on schema, which defines this option only for service specific commands.

Having that -c shortcut stopped being recognized on time, as initial CLI flags resolution (which precedes configuration file resolution), loads schema only for non-service command flags

This patch ensures that before we attempt to resolve configuration filename, we have flags common for service specific commands also loaded from schema

Closes: #10601

[codecov]

Codecov Report

Merging #10607 (052ebc2) into main (0c2026c) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main   #10607      +/-   ##
==========================================
- Coverage   85.98%   85.98%   -0.01%     
==========================================
  Files         330      330              
  Lines       12469    12468       -1     
==========================================
- Hits        10721    10720       -1     
  Misses       1748     1748              

Impacted Files	Coverage Δ
scripts/serverless.js	62.94% <100.00%> (-0.14%)	⬇️

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[pgrzesik]

Looks great 👍