Fix: lookupByScript don't support import

[leejanee]

Description of your changes

Fixes #

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

[codecov]

Codecov Report

Merging #2788 (349a7bf) into master (3d2fcac) will increase coverage by 0.14%.
The diff coverage is 73.80%.

@@            Coverage Diff             @@
##           master    #2788      +/-   ##
==========================================
+ Coverage   59.72%   59.87%   +0.14%     
==========================================
  Files         223      223              
  Lines       22855    22895      +40     
==========================================
+ Hits        13650    13708      +58     
+ Misses       7534     7525       -9     
+ Partials     1671     1662       -9     

Flag	Coverage Δ
apiserver-unittests	27.14% <61.90%> (+0.44%)	⬆️
core-unittests	54.71% <73.80%> (+0.02%)	⬆️
e2e-multicluster-test	23.38% <0.00%> (+0.06%)	⬆️
e2e-rollout-tests	30.96% <0.00%> (-0.04%)	⬇️
e2etests	36.39% <0.00%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/cue/model/value/value.go	83.17% <73.80%> (-1.59%)	⬇️
...aits/traitdefinition/traitdefinition_controller.go	65.26% <0.00%> (-5.27%)	⬇️
...dev/v1alpha2/applicationconfiguration/component.go	58.26% <0.00%> (-0.79%)	⬇️
...tepdefinition/workflowstepdefinition_controller.go	69.14% <0.00%> (ø)
pkg/oam/util/helper.go	73.90% <0.00%> (+0.48%)	⬆️
pkg/multicluster/cluster_management.go	49.28% <0.00%> (+0.71%)	⬆️
...am.dev/v1alpha2/applicationconfiguration/render.go	88.21% <0.00%> (+0.81%)	⬆️
pkg/controller/utils/capability.go	80.51% <0.00%> (+1.27%)	⬆️
...ler/core.oam.dev/v1alpha2/application/generator.go	78.57% <0.00%> (+1.58%)	⬆️
...es/policydefinition/policydefinition_controller.go	62.82% <0.00%> (+2.56%)	⬆️
... and 5 more

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