clang-tidy: Enable bugprone-unchecked-optional-access

Enable bugprone-unchecked-optional-access to detect the case that it
accesses std::optional without checking empty.

See https://gerrit.openbmc.

clang-tidy: Enable bugprone-unchecked-optional-access

Enable bugprone-unchecked-optional-access to detect the case that it
accesses std::optional without checking empty.

See https://gerrit.openbmc.org/c/openbmc/docs/+/78034 for details.

Signed-off-by: Lei YU <yulei.sh@bytedance.com>
Change-Id: I6f35cc4585e681b7f4030b85295074b1564e8a48

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