Fixed possible “Resource temporarily unavailable” (EAGAIN) errors in TCTI implementation #2577

Job	Run time
test-tcti-config	14m 19s
test-fuzz	2m 36s
test-no-crypto-build	1m 13s
test-mbedtls (ubuntu-22.04-mbedtls-3.1)	2m 25s
scanbuild	7m 3s
test-coverage	5m 48s
build-test (ubuntu-22.04, gcc)	4m 32s
build-test (fedora-32, clang)	5m 4s
build-test (fedora-32, gcc)	4m 47s
build-test (ubuntu-22.04, clang)	4m 41s
build-test (ubuntu-24.04, gcc)	5m 15s
build-test (opensuse-leap, gcc)	4m 22s
build-test (arch-linux, gcc)	4m 42s
build-test (alpine-3.15, clang)	4m 51s
test-mbedtls (ubuntu-20.04)	2m 46s
build-test (arch-linux, clang)	4m 17s
build-test (alpine-3.15, gcc)	4m 4s
build-test (ubuntu-24.04, clang)	5m 27s
build-test (opensuse-leap, clang)	4m 52s
coverity-test	0s
	1h 33m 4s

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