chore: limit packet data to length of one.

[DimitrisJim]

Description

in the rest of the validation funcs

closes: #7390

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[sonarcloud[bot]]

Quality Gate passed for 'ibc-go'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud