colexec: internal error caused by crdb_internal.range_stats

[knz]

In #93644 I am modifying SHOW RANGES to execute crdb_internal.range_stats outside of the vtable generator for crdb_internal.ranges.

When I do this on top of master, I get non-deterministic crashes with the stack trace below.
The crash happens mostly when the operation runs soon after a test starts. This suggests a race with some initialization.
In most cases the execution is fine.

If I manually modify the FunctionProperties of crdb_internal.range_stats to set DistsqlBlocklist: true, the issue disappears. (edit: no, it doesn't. but it makes the problem appear less often.)

This can be reproduced as follows:

1. download the branch at https://github.com/knz/cockroach/tree/20221216-distsql-bug
2. run dev testlogic base --files='show_ranges' --config=local in a loop

split_at:21: SELECT start_key, end_key, replicas, lease_holder FROM [SHOW RANGES FROM TABLE t WITH DETAILS]
        expected success, but found
        (XX000) internal error: unexpected error from the vectorized engine: runtime error: index out of range [1] with length 1
        error.go:89: in func1()
        DETAIL: stack trace:
        github.com/cockroachdb/cockroach/pkg/sql/colexecerror/error.go:89: func1()
        GOROOT/src/runtime/panic.go:884: gopanic()
        GOROOT/src/runtime/panic.go:113: goPanicIndex()
        github.com/cockroachdb/cockroach/pkg/col/coldata/bytes.go:194: Get()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/range_stats.go:67: appendKey()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/range_stats.go:116: func1()
        github.com/cockroachdb/cockroach/pkg/sql/colmem/allocator.go:441: PerformOperation()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/range_stats.go:91: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecprojconst/proj_const_right_ops.eg.go:22383: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecbase/cast.eg.go:10699: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/range_stats.go:79: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecprojconst/proj_const_right_ops.eg.go:22383: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecbase/cast.eg.go:10699: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecproj/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecproj/proj_non_const_ops.eg.go:4415: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:204: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/buffer.go:48: advance()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/case.go:195: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecproj/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecproj/proj_non_const_ops.eg.go:4415: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:204: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/buffer.go:48: advance()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/case.go:195: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecutils/operator.go:137: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecproj/bazel-out/k8-fastbuild/bin/pkg/sql/colexec/colexecproj/proj_non_const_ops.eg.go:4415: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/colexecbase/simple_project.go:124: Next()
        github.com/cockroachdb/cockroach/pkg/sql/colexec/invariants_checker.go:93: Next()

cc @yuzefovich for triage.

Jira issue: CRDB-22535
Epic: CRDB-22701