fix(tooltip): fix tooltip with delay only appearing once

[ahtshamraziq]

Fixes #2606

• read and followed the CONTRIBUTING.md guide.
• built and tested the changes locally.

[codecov]

Codecov Report

Merging #2826 into development will decrease coverage by 0.03%.
The diff coverage is 33.33%.

@@               Coverage Diff               @@
##           development    #2826      +/-   ##
===============================================
- Coverage        70.44%   70.41%   -0.04%     
===============================================
  Files              137      137              
  Lines             4094     4096       +2     
  Branches           712      713       +1     
===============================================
  Hits              2884     2884              
- Misses             912      913       +1     
- Partials           298      299       +1

Impacted Files	Coverage Δ
src/tooltip/tooltip.directive.ts	56.7% <33.33%> (-1.2%)	⬇️

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[codecov]

Codecov Report

Merging #2826 into development will decrease coverage by 0.03%.
The diff coverage is 16.66%.

@@               Coverage Diff               @@
##           development    #2826      +/-   ##
===============================================
- Coverage        70.44%   70.41%   -0.04%     
===============================================
  Files              137      137              
  Lines             4094     4096       +2     
  Branches           712      713       +1     
===============================================
  Hits              2884     2884              
- Misses             912      913       +1     
- Partials           298      299       +1

Impacted Files	Coverage Δ
src/tooltip/tooltip.directive.ts	56.7% <16.66%> (-1.2%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8bedcee...c331d04. Read the comment docs.

[valorkin]

hey @ahtshamraziq
if you wouldn't mind I will try to fix sauce lab tests for PRs using your branch,
cuz issue can be reproduced only from forks, and from folks who doesn't have write access to ngx-bootstrap

[valorkin]

@ahtshamraziq thanks again :)