Use data() for getting pointer instead of begin()

[4JustMe4]

Changelog entry

Avoid this type of errors on upcoming protobuf

$(SOURCE_ROOT)/contrib/ydb/core/driver_lib/run/kikimr_services_initializers.cpp:261:18: error: no matching constructor for initialization of 'TCpuMask'
        result = TCpuMask(cfg.GetX().begin(), cfg.GetX().size());
                 ^        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
$(SOURCE_ROOT)/contrib/ydb/core/driver_lib/run/kikimr_services_initializers.cpp:314:26: note: in instantiation of function template specialization 'NKikimr::NKikimrServicesInitializers::ParseAffinity<NKikimrConfig::TAffinity>' requested here
        basic.Affinity = ParseAffinity(poolConfig.GetAffinity());
                         ^
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:26:5: note: candidate template ignored: could not match 'const T *' against 'const_iterator' (aka 'RepeatedIterator<const unsigned int>')
    TCpuMask(const T* cpus, TCpuId size) {
    ^
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:20:14: note: candidate constructor not viable: requires single argument 'cpuId', but 2 arguments were provided
    explicit TCpuMask(TCpuId cpuId) {
             ^
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:34:14: note: candidate constructor not viable: requires single argument 'cpuList', but 2 arguments were provided
    explicit TCpuMask(const TString& cpuList) {
             ^
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:13:8: note: candidate constructor (the implicit copy constructor) not viable: requires 1 argument, but 2 were provided
struct TCpuMask {
       ^
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:13:8: note: candidate constructor (the implicit move constructor) not viable: requires 1 argument, but 2 were provided
$(SOURCE_ROOT)/contrib/ydb/library/actors/util/cpumask.h:17:5: note: candidate constructor not viable: requires 0 arguments, but 2 were provided
    TCpuMask() {}
    ^
1 error generated.

...

Changelog category

• Not for changelog (changelog entry is not required)

Additional information

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[github-actions]

⚪ 2024-05-24 09:26:56 UTC Pre-commit check for aefba74 has started.
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Test history

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
14791	13478	0	3	1301	9

[github-actions]

⚪ 2024-05-24 09:27:45 UTC Pre-commit check for aefba74 has started.
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🔴 2024-05-24 11:22:04 UTC Some tests failed, follow the links below.

Test history

TESTS	PASSED	ERRORS	FAILED	SKIPPED	MUTED?
10665	10594	0	27	31	13

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