Use Ref::filter_map if rustc is later than 1.63

[futursolo]

Description

Use Ref::filter_map Instead of test and unwrapping if compiler is later than 1.63.

Checklist

• I have reviewed my own code
• I have added tests

[github-actions]

Visit the preview URL for this PR (updated for commit 3d95e7c):

https://yew-rs-api--pr2904-filter-map-since-1-6-0iru2mg8.web.app

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[github-actions]

Benchmark - SSR

Yew Master

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	269.437	281.657	271.109	3.763
Hello World	10	476.162	482.558	478.077	2.099
Function Router	10	1664.824	1700.117	1678.508	11.165
Concurrent Task	10	1005.482	1006.901	1006.421	0.491

Pull Request

Benchmark	Round	Min (ms)	Max (ms)	Mean (ms)	Standard Deviation
Baseline	10	280.937	286.511	281.828	1.668
Hello World	10	476.906	489.758	479.085	3.936
Function Router	10	1665.499	1693.691	1673.255	9.849
Concurrent Task	10	1006.334	1007.366	1006.792	0.288

[github-actions]

Size Comparison

examples	master (KB)	pull request (KB)	diff (KB)	diff (%)
boids	170.441	170.457	+0.016	+0.009%
communication_child_to_parent	90.600	90.613	+0.014	+0.015%
communication_grandchild_with_grandparent	105.538	105.558	+0.020	+0.019%
communication_grandparent_to_grandchild	101.438	101.449	+0.012	+0.012%
communication_parent_to_child	87.736	87.750	+0.014	+0.016%
contexts	107.961	107.972	+0.011	+0.010%
counter	85.610	85.624	+0.014	+0.016%
counter_functional	86.141	86.152	+0.012	+0.014%
dyn_create_destroy_apps	88.521	88.532	+0.012	+0.013%
file_upload	100.188	100.204	+0.016	+0.016%
function_memory_game	163.358	163.364	+0.006	+0.004%
function_router	348.186	348.221	+0.035	+0.010%
function_todomvc	158.178	158.183	+0.005	+0.003%
futures	222.486	222.500	+0.014	+0.006%
game_of_life	105.158	105.169	+0.011	+0.010%
immutable	181.867	181.884	+0.017	+0.009%
inner_html	82.478	82.490	+0.013	+0.015%
js_callback	111.602	111.608	+0.007	+0.006%
keyed_list	195.783	195.795	+0.012	+0.006%
mount_point	85.236	85.252	+0.016	+0.018%
nested_list	112.143	112.153	+0.011	+0.010%
node_refs	93.141	93.155	+0.015	+0.016%
password_strength	1548.475	1548.483	+0.009	+0.001%
portals	96.530	96.549	+0.019	+0.019%
router	317.885	317.916	+0.031	+0.010%
simple_ssr	152.458	152.469	+0.011	+0.007%
ssr_router	393.735	393.777	+0.042	+0.011%
suspense	109.337	109.343	+0.006	+0.005%
timer	88.435	88.446	+0.012	+0.013%
todomvc	139.268	139.279	+0.012	+0.008%
two_apps	86.224	86.235	+0.012	+0.014%
web_worker_fib	152.530	152.544	+0.014	+0.009%
webgl	84.917	84.932	+0.015	+0.017%

✅ None of the examples has changed their size significantly.

[WorldSEnder]

Including rustversion, at least on my machine, does not contribute to the critical path for compile time and has little overhead there. Fine by me to avoid an unwrap.