[github-actions] Allow running rust image build on workflow_dispatch action
[github-actions] Allow running rust image build on workflow_dispatch action

Closes: #1478

aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core