fix(engine): using tabindex getter in assert

[davidturissini]

Details

Using native tabindex getter instead of elm.tabIndex

Does this PR introduce a breaking change?

• Yes
• No

[salesforce-best-lwc-internal]

Benchmark results

Base commit: a5689a5 | Target commit: 19959fc

lwc-engine-benchmark

table-append-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table/append/1k	duration	149.40 (±4.25 ms)	149.75 (±3.90 ms)	+0.4ms (0.2%) 👌

table-clear-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table/clear/1k	duration	6.30 (±0.40 ms)	6.20 (±0.40 ms)	-0.1ms (1.6%) 👌

table-create-10k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table/create/10k	duration	870.55 (±6.05 ms)	856.95 (±4.40 ms)	-13.6ms (1.6%) 👍

table-create-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table/create/1k	duration	113.50 (±2.80 ms)	115.35 (±3.70 ms)	+1.8ms (1.6%) 👎

table-update-10th-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table/update-10th/1k	duration	74.30 (±1.65 ms)	86.05 (±1.65 ms)	+11.8ms (15.8%) 👎

tablecmp-append-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-component/append/1k	duration	237.90 (±9.80 ms)	237.25 (±11.95 ms)	-0.7ms (0.3%) 👌

tablecmp-clear-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-component/clear/1k	duration	12.10 (±1.40 ms)	11.65 (±1.55 ms)	-0.5ms (3.7%) 👌

tablecmp-create-10k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-component/create/10k	duration	1633.10 (±9.55 ms)	1639.80 (±10.80 ms)	+6.7ms (0.4%) 👌

tablecmp-create-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-component/create/1k	duration	202.00 (±4.70 ms)	199.30 (±5.75 ms)	-2.7ms (1.3%) 👌

tablecmp-update-10th-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-component/update-10th/1k	duration	69.40 (±5.95 ms)	69.70 (±5.00 ms)	+0.3ms (0.4%) 👌

wc-append-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-wc/append/1k	duration	229.50 (±11.80 ms)	233.05 (±9.60 ms)	+3.6ms (1.5%) 👌

wc-clear-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-wc/clear/1k	duration	23.25 (±1.70 ms)	22.15 (±2.45 ms)	-1.1ms (4.7%) 👌

wc-create-10k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-wc/create/10k	duration	1690.80 (±45.70 ms)	1694.70 (±26.75 ms)	+3.9ms (0.2%) 👌

wc-create-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-wc/create/1k	duration	203.05 (±6.15 ms)	201.30 (±4.35 ms)	-1.8ms (0.9%) 👌

wc-update-10th-1k	metric	base(a5689a5)	target(19959fc)	trend
benchmark-table-wc/update-10th/1k	duration	70.10 (±4.85 ms)	70.80 (±5.45 ms)	+0.7ms (1.0%) 👌