fix(gnoweb): update "airgapped" commands in realm help page

[thehowl]

This matches gnokey sign's behaviour to the updated version from #1976. I've manually tested this on a local node, and it works.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 49.95%. Comparing base (4dafb8a) to head (9cbdf5f).

Files	Patch %	Lines
gno.land/pkg/keyscli/addpkg.go	0.00%	1 Missing ⚠️
gno.land/pkg/keyscli/run.go	0.00%	1 Missing ⚠️
tm2/pkg/crypto/keys/client/broadcast.go	0.00%	1 Missing ⚠️
tm2/pkg/crypto/keys/client/send.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2244      +/-   ##
==========================================
- Coverage   54.60%   49.95%   -4.66%     
==========================================
  Files         579      578       -1     
  Lines       77896    77794     -102     
==========================================
- Hits        42539    38861    -3678     
- Misses      32185    35809    +3624     
+ Partials     3172     3124      -48     

Flag	Coverage Δ
gno.land	61.67% <33.33%> (+0.04%)	⬆️
tm2	54.44% <33.33%> (-0.03%)	⬇️

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[moul]

Can you add a txtar file named gnoweb-airgapped.txtar so we have a regression test that will automatically fail if we break CLI compatibility again?

In addition, this will allow me to reuse the txtar logic that uses stdout.

[moul]

Btw, I think that #1976 removes the possibility to sign the same tx twice, with two different accounts from CLI.

[thehowl]

@moul done; some fine tuning to get there as not all commands in gnokey were actually using io as intended.

[thehowl]

Btw, I think that #1976 removes the possibility to sign the same tx twice, with two different accounts from CLI.

yes, I have some doubts about what the PR did as well. I've asked milos to clarify, but we may end up changing some behaviour again.