Fix Stax/Flex: incomplete APDU is returned #98

Job	Run time
Build binary used to check signture during the test	2m 53s
Build application using the reusable workflow / Retrieve application metadata / Retrieve application metadata	6s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (nanox)	2m 22s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (flex)	2m 21s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (stax)	2m 24s
Build application using the reusable workflow / Build application for NanoS, X, S+, and Stax (nanosp)	2m 18s
Build application using the reusable workflow / Merge build artifacts	29s
Run ragger tests using the reusable workflow / Retrieve application metadata / Retrieve application metadata	10s
Run ragger tests using the reusable workflow / Functional tests with Ragger (stax)	1m 48s
Run ragger tests using the reusable workflow / Functional tests with Ragger (nanox)	1m 22s
Run ragger tests using the reusable workflow / Functional tests with Ragger (nanosp)	1m 22s
Run ragger tests using the reusable workflow / Functional tests with Ragger (flex)	2m 7s
Run ragger tests using the reusable workflow / Merge snapshots artifacts	2s
Run ragger tests using the reusable workflow / Open a PR with the new snapshots	0s
	19m 44s

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