Remove use of Animated.delay and sequence for CSS transition polyfill

[necolas]

We can use the delay field in the config for timing and spring rather than using Animated.delay and Animated.sequence. This should help with animation sequencing and avoid depending on onAnimationComplete events firing.

[github-actions]

workflow: benchmarks/size

Comparison of minified (terser) and compressed (brotli) size results, measured in bytes. Smaller is better.

Results	Base	Patch	Ratio
react-strict-dom/dist/dom/index.js
· compressed	2,514	2,514	1.00
· minified	8,691	8,691	1.00
react-strict-dom/dist/dom/runtime.js
· compressed	855	855	1.00
· minified	2,435	2,435	1.00
react-strict-dom/dist/native/index.js
· compressed	16,022	16,065	1.00	+
· minified	59,923	59,912	1.00	-

[github-actions]

workflow: benchmarks/perf (native)

Comparison of performance test results, measured in operations per second. Larger is better.

Results	Base	Patch	Ratio
css.create
· small	1,142,718	1,133,708	0.99	-
· small with units	427,033	426,159	1.00	-
· small with variables	665,158	660,011	0.99	-
· several small	317,556	317,950	1.00	+
· large	205,287	203,844	0.99	-
· large with polyfills	144,961	144,983	1.00	+
· complex	99,930	99,384	0.99	-
· unsupported	216,336	217,777	1.01	+
css.createTheme
· simple theme	233,299	232,213	1.00	-
· polyfill theme	218,740	218,242	1.00	-
css.props
· small	292,999	292,988	1.00	-
· small with units	221,640	222,379	1.00	+
· small with variables	115,256	113,990	0.99	-
· small with variables of units	78,897	78,893	1.00	-
· large	126,721	126,520	1.00	-
· large with polyfills	41,993	41,757	0.99	-
· complex	25,416	25,446	1.00	+
· unsupported	181,291	181,074	1.00	-
· simple merge	185,054	184,978	1.00	-
· wide merge	19,171	19,419	1.01	+
· deep merge	18,766	19,047	1.01	+
· themed merge	35,930	36,505	1.02	+