fix: control status blocking before chain init with runtimes

[ptrus]

The first commit adds the early-query scenario for runtimes and does some minor needed refactoring so that the base Scenario struct implements the Scenario interface.

Second one fixes the issue (runtime.Host() doesn't wait for the registry descriptor anymore, which was blocking the GetStatus query).

TODO: also backport to stable/23.0.x once approved

[codecov]

Codecov Report

Merging #5407 (22d3afd) into master (26ffcfb) will increase coverage by 0.31%.
Report is 1 commits behind head on master.
The diff coverage is 76.92%.

@@            Coverage Diff             @@
##           master    #5407      +/-   ##
==========================================
+ Coverage   66.54%   66.85%   +0.31%     
==========================================
  Files         533      533              
  Lines       56323    56328       +5     
==========================================
+ Hits        37478    37660     +182     
+ Misses      14419    14270     -149     
+ Partials     4426     4398      -28     

Files	Coverage Δ
go/oasis-node/cmd/node/node_control.go	67.41% <100.00%> (+9.11%)	⬆️
go/runtime/registry/registry.go	77.57% <85.71%> (+2.29%)	⬆️
go/runtime/registry/host.go	65.85% <50.00%> (-0.19%)	⬇️

... and 52 files with indirect coverage changes