fix bad tab page preview while closing tabs

[cezaraugusto]

fix #11632

Note for reviewers: There are some bad tab page functionality happening for latest versions so while this works on master it's better tested in 0.19.x

My take is that w/ previous timeout made tab page previews to happen unintentionally. I couldn't reproduce the bug again w/ this fix. No need to timeout for tab pages which was a copy of old preview mechanism for tabs.

Test plan (better tested in 0.19.x):

1. Open 3 tab pages
2. Sequentially close tabs
3. No tab preview should be triggered

[codecov-io]

Codecov Report

Merging #11768 into master will increase coverage by 0.02%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master   #11768      +/-   ##
==========================================
+ Coverage   52.75%   52.78%   +0.02%     
==========================================
  Files         269      269              
  Lines       25668    25653      -15     
  Branches     4097     4093       -4     
==========================================
- Hits        13542    13541       -1     
+ Misses      12126    12112      -14

Flag	Coverage Δ
#unittest	52.78% <50%> (+0.02%)	⬆️

Impacted Files	Coverage Δ
js/actions/windowActions.js	4.9% <ø> (+0.04%)	⬆️
js/stores/windowStore.js	27.01% <0%> (ø)	⬆️
js/state/frameStateUtil.js	64.48% <66.66%> (+1.46%)	⬆️

[bbondy]

master: fe9a065
0.21.x: a3e71e6
0.20.x: b4cfefc
0.19.x: 3b9daa1

[bbondy]

Backed out here:
master: 06e535c
0.21.x: a604752
0.20.x: 1c8d5e5
0.19.x: 340e4e5